View source for Patent HU-1901-23722

=== 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 nearly 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.
* [http://epub.hpo.hu/e-kutatas/?lang=EN 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
* [http://epub.hpo.hu/e-kutatas/aa?_p=D6CC9058F27FC7AF52AFA0078D40EF1C 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: Prague (Bohemia at the time) ; [[AH]] may be proper for inventor country. [[Patent GB-1901-15960]] locates the inventor at "7 Zizkastrasse, Königliche Weinberge near Prague, Kingdom of Bohemia, Austrian Empire".
* Inventor occupation: Gentleman, or Privatier (Magánzó)


{{Patent family|{{PAGENAME}}}}
{{Patent
|Year filed=1901
|Year granted=1902
|Office=HU
|Patent number=23722
|Inventors=Waldemar Porak
|Inventor country=AH
|Applicant person=Waldemar Porak
|Applicant type=INDIV
|Applicant is inventor=Yes
|Original title=Repülőgép
|English title=Aircraft actually an early helicopter which looks like a ship but does not seem to be LTA
|Tech fields=propellers; ascension; propulsion; hybrid; HTA; kite; steering; aerodynamics
|Filing date=1901/07/05
|Grant date=1902/02/15
|Granted=Yes
|Publication date=1902/03/10
|Related to aircraft=Yes
|National tech categories=HU V/h
|Family year=1901
|First filing=Yes
|Number of text pages=2
|Number of diagram pages=1
|Number of figures=3
|Number of claims=2
}}