Drilldown: Patents

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Patents > Office: DE & National tech categories: DE 77h.6 & Number of figures: 10-12

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Year filed:
1909 (1) · 1917 (1)
Year granted:
1912 (1) · 1918 (1)
Office: (Click arrow to add another value)
Inventors:
Christian Lorenzen (1) · Jakob Kreitmayer (1)
Inventor country:
DE (2) · GB (1)
Applicant person:
None (1) · Jakob Kreitmayer (1)
Applicant firm:
None (2)
Applicant type:
INDIV (2)
Applicant is inventor:
Yes (2)
Tech fields:
helicopter (1) · metal (1) · propeller (2)
Filing date:
1909 (1) · 1917 (1)
Full specification filed date:
None (2)
Application number:
None (2)
Grant date:
None (2)
Granted:
Yes (2)
Publication date:
1912 (1) · 1919 (1)
Supplementary to patent:
None (1) · Patent GB-1908-13809 (1)
Related to aircraft:
1 (1) · Yes (1)
Patent agent:
None (2)
Assigned to:
None (2)
National tech categories: (Click arrow to add another value)
IPCs:
None (1) · IPC B64C11/16 (1) · IPC B64C27/46 (1)
CPCs:
None (1) · CPC B64C11/24 (1)
Family year:
1908 (1) · 1917 (1)
First filing:
No (1) · Yes (1)
Cites these patents:
None (2)
Citations from after 1930:
None (2)
Number of text pages:
3 (2)
Number of claims:
None (1) · 3 (1)
Number of diagram pages:
None (1) · 1 (1)
Number of figures:
10 (1) · 12 (1)

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