Difference between revisions of "Patent DE-1905-175477"

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(copyedits)
(Joseph Hofmann und Objekt und Digitalisat ; also, this is one of a few Hofmann patents on which a different patent classification is pencilled on over the familiar printed DE 77h variation)
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Here is another patent on which the Patent Object on the Lilienthal website gives “Hofmann, Josef”, though the original only shows “J Hofmann”.
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The title of the patent itself is simply “Schraubenpropeller”. The national tech classification which we would call [[DE 77h.6]] is consistently printed on the original document. However, “Klasse 62c Gruppe 1” is pencilled in. This sort of thing happens on a few of Hofmann's German patent.
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=== Sources ===
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* [https://lilienthal-museum.museumnet.eu/archiv/objekt/3304 Patent Objekt via Lilienthal museum patents]
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* [https://lilienthal-museum.museumnet.eu/sites/lilienthal-museum.museumnet.eu/files/archivalie/digitalisatepublic/de000000175477a.pdf Patent Digitalisat via Lilienthal museum patents]
 
* Inventor location: Berlin
 
* Inventor location: Berlin
=== Sources ===
 
* [[Lilienthal museum patents]]
 
* [http://worldwide.espacenet.com/publicationDetails/biblio?FT=D&CC=DE&NR=175477 espacenet]
 
  
 
{{Patent
 
{{Patent
|Year granted=1905
+
|Year filed=1905
 +
|Year granted=1906
 
|Office=DE
 
|Office=DE
 
|Patent number=175477
 
|Patent number=175477
|Inventors=J. Hofmann
+
|Inventors=Joseph Hofmann
 
|Inventor country=DE
 
|Inventor country=DE
 +
|Applicant person=Joseph Hofmann
 
|Applicant is inventor=1
 
|Applicant is inventor=1
 
|Original title=Verbesserung der Schraubenpropeller nach Patent Nr. 141656
 
|Original title=Verbesserung der Schraubenpropeller nach Patent Nr. 141656
 
|English title=Improvement of screw propellers according to patent No. 141656
 
|English title=Improvement of screw propellers according to patent No. 141656
 +
|Tech field=Propellers; Propulsion; Airplane
 
|Filing date=1905-06-05
 
|Filing date=1905-06-05
 +
|Grant date=
 +
|Granted=Yes
 +
|Publication date=1906/09/29
 
|Granted=1
 
|Granted=1
 
|Supplementary to patent=Patent DE-1902-141656
 
|Supplementary to patent=Patent DE-1902-141656
 
|Related to aircraft=Yes
 
|Related to aircraft=Yes
 +
|National tech categories=DE 77h.6
 
|CPCs=CPC B64C11/006
 
|CPCs=CPC B64C11/006
 
|Family year=1905
 
|Family year=1905
|Application ID=9643252
+
|Application ID=
 +
|Number of text pages=2
 +
|Number of diagram pages=1
 +
|Number of figures=3
 +
|Number of claims=1
 
}}
 
}}

Revision as of 09:41, 8 October 2021

Here is another patent on which the Patent Object on the Lilienthal website gives “Hofmann, Josef”, though the original only shows “J Hofmann”.

The title of the patent itself is simply “Schraubenpropeller”. The national tech classification which we would call DE 77h.6 is consistently printed on the original document. However, “Klasse 62c Gruppe 1” is pencilled in. This sort of thing happens on a few of Hofmann's German patent.

Sources


Year filed 1905
Year granted 1906
Office DE
Patent number 175477
Inventors Joseph Hofmann
Inventor country DE
Applicant person Joseph Hofmann
Applicant firm
Applicant type
Applicant is inventor? 1
Original title Verbesserung der Schraubenpropeller nach Patent Nr. 141656
English title Improvement of screw propellers according to patent No. 141656
Tech fields Propellers, Propulsion, Airplane
Filing date 1905-06-05
Full specification filed date
Application number
Grant date
Granted? 1
Publication date 1906/09/29
Supplementary to patent Patent DE-1902-141656
Related to aircraft? Yes
Serial number
Patent agent
Assigned to
National tech categories DE 77h.6
IPCs
CPCs CPC B64C11/006
Family year 1905
First filing?
Cites these patents
Citations from after 1930
Application ID
INPADOC family ID
Number of text pages 2
Number of diagram pages 1
Number of figures 3
Number of claims 1