Patent US-1914-1272846

From Inventing aviation
Jump to navigation Jump to search
  • Inventor location: Oak Park, Cook county, Illinois
  • Tech class CPC B64C27/10: Helicopters with two or more rotors arranged coaxially
  • Not clear whether to use first filing year or the "renewal" year as "filing year" ; I prefer to use the earliest one. This patentee makes reference to this patent in a child patent and uses the LATER date, 1916. We'll figure it out.

Patent family descending from Patent US-1914-1272846

Sources


Year filed 1914
Year granted 1918
Office US
Patent number 1272846
Inventors Thomas Osborne Perry
Inventor country US
Applicant person Thomas Osborne Perry
Applicant firm
Applicant type INDIV
Applicant is inventor? 1
Original title Aircraft for mechanical flight and automatic soaring
English title Aircraft for mechanical flight and automatic soaring
Tech fields
Filing date 1914-06-22
Full specification filed date 1916-12-04
Application number 13500716
Grant date 1918-07-16
Granted? 1
Publication date
Supplementary to patent
Related to aircraft? 1
Serial number
Patent agent None
Assigned to
National tech categories
IPCs IPC B64C27/10
CPCs CPC B64C27/10
Family year 1914
First filing? 1
Cites these patents
Citations from after 1930 7
Application ID 47945154
INPADOC family ID 43225932
Number of text pages 11
Number of diagram pages 6
Number of figures 22
Number of claims 30