Patent HU-1901-21975

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Sources

  • “Publication/disclosure” will be treated as “date granted”, for now. The “Megjelent (year). évi (month) hó (day)-én (or án)”, that is “Released (month) (day), (year)”, given on the original, is seemingly always later, and we do not know which legally constitutes the patent’s being “granted”. Fortunately, filing date data is clean and simple and consistent between the data page and the original.
  • the Szellemi Tulajdon Nemzeti Hivatala database in anglophone setting, choosing the Patent option, among the Advanced search on the left of the page, and using patent classification “V/h” as the keyword
  • Original .pdf drawn from Szellemi Tulajdon Nemzeti Hivatala database
  • (Virtual or direct analogue access to Szabadalmi Kőzlőny will facilitate the gathering of other data.)
  • Inventor location: Budapest, Hungary
  • Inventor occupation: Academic Painter (Akadémiai Festő)

(This Manó Kalisch, properly Kalisch Manó, is quite likely the "Emanuel Kalisch" we have elsewhere.)


Year filed 1901
Year granted 1901
Office HU
Patent number 21975
Inventors Emanuel Kalisch
Inventor country HU
Applicant person Emanuel Kalisch
Applicant firm
Applicant type INDIV
Applicant is inventor? Yes
Original title Kettős csavar-propeller röpülő gépekhez
English title Double screw propeller for flying machines
Tech fields propellers, propulsion
Filing date 1901-03-24
Full specification filed date
Application number 21975
Grant date 1901-07-20
Granted? Yes
Publication date 1901-08-05
Supplementary to patent
Related to aircraft? 1
Serial number
Patent agent
Assigned to
National tech categories HU V/h
IPCs
CPCs
Family year 1901
First filing?
Cites these patents
Citations from after 1930
Application ID
INPADOC family ID
Number of text pages 3
Number of diagram pages 1
Number of figures 4
Number of claims 2