Patent HU-1917-77891

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"Date and number of convention priority 1917-03-15" ; this is likely a reference to either a German or an Austrian parent patent. We are seeking clarification relative to the Budapest-based Siemens és Halske Részvénytársaság and relative to Siemens-Schuckert Werke GmbH. Espacenet results are broad and extensive, internationally and otherwise, with the chance of certain patent references going from one corporate designation to another.


  • “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: Berlin-Siemensstadt and Vienna

Year filed 1917
Year granted 1920
Office HU
Patent number 77891
Inventor country DE, AT
Applicant person
Applicant firm Siemens & Halske Aktiengesellshaft
Applicant type COMPANY
Applicant is inventor?
Original title Berendezés a forgó mótor és a repülőgép segédkészülékeinek indítására
English title Equipment for starting the rotating motor and aeroplane auxiliary equipment
Tech fields Motors, Airplane, Ignition
Filing date 1917-08-04
Full specification filed date
Application number 77891
Grant date 1920-10-15
Granted? Yes
Publication date 1921-04-30
Supplementary to patent Patent DE-1917-03-15
Related to aircraft? Yes
Serial number
Patent agent
Assigned to
National tech categories HU V/h
Family year 1917
First filing? 0
Cites these patents
Citations from after 1930
Application ID
Number of text pages 1
Number of diagram pages 1
Number of figures 2
Number of claims 1