Drilldown: Patents

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Patents > Grant date: April 1919 & Number of text pages: 4-30 & Number of claims: 4-90

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Year filed:
(There are no values for this filter)
Year granted:
(There are no values for this filter)
Office:
FR (1) · GB (8) · US (1)
Inventors:
None (1) · Frederick James Hargreaves (1) · George Henry Challenger (2) · George Tilghman Richards (1) · Harold Arthur Savage (2) · Herbert Wiley Hetherington (1) · John D. Ebert (1) · Joseph Cordner (1) · Richard Fitz Power (1) · Robert Blackburn (1)
Inventor country:
GB (6) · IE (1) · US (3)
Applicant person:
None (1) · Frederick James Hargreaves (1) · George Henry Challenger (2) · George Tilghman Richards‎ (1) · Harold Arthur Savage (2) · Herbert Wiley Hetherington (1) · John D. Ebert (1) · Joseph Cordner (1) · Richard Fitz Power (1) · Robert Blackburn (1)
Applicant firm:
None (4) · Blackburn Aeroplane and Motor Co. (2) · Curtiss Aeroplane (1) · Vickers Limited (2) · William Beardmore & Co. (1)
Applicant type:
COMPANY (3) · COMPANY + INDIV (3) · INDIV (4)
Applicant is inventor:
No (5) · Yes (5)
Tech fields:
None (1) · air compressor (1) · airplane (3) · biplane (1) · Control (2) · Design (1) · flying boat (1) · Hydroaeroplane (1) · marine (1) · military (1) · multiplanes (1) · ornithopter (1) · Propellers (1) · propulsion (1) · Rudder (1) · windmill (1)
Filing date:
January 1916 (1) · April 1916 (2) · May 1916 (1) · July 1916 (1) · August 1916 (1) · December 1916 (1) · August 1917 (1) · April 1918 (2)
Full specification filed date:
August 1916 (1) · October 1916 (2) · November 1916 (1) · February 1917 (1) · June 1917 (1) · November 1918 (1)
Application number:
None (3) · 1181516 (1) · 18614517 (1) · 492855D (1) · 570916 (1) · 592516 (1) · 639118 (1) · 670318 (1)
Grant date:
April 1, 1919 (1) · April 3, 1919 (2) · April 5, 1919 (1) · April 10, 1919 (3) · April 22, 1919 (1) · April 24, 1919 (2)
Granted:
Yes (10)
Publication date:
April 1919 (1) · July 1919 (1)
Supplementary to patent:
None (9) · Patent US-1915-1223319 (1) · Patent US-1915-1246016 (1)
Related to aircraft:
1 (9) · Yes (1)
Patent agent:
Brewer & Son (1) · H. D. Fitzpatrick & Co. (1) · Haseltine, Lake & Co. (3) · Lavoix et Mosès (1) · None (2) · Page & Rowlingson (1) · Wm. E. Dyre (1)
Assigned to:
None (10)
National tech categories:
None (8) · FR 6.4 (1) · USPC 416/119 (1) · USPC 416/18 (1) · USPC 416/23 (1) · USPC 416/60 (1) · USPC 416/93R (1) · USPC 417/293 (1)
IPCs:
None (1) · IPC B64C1/00 (1) · IPC B64C17/00 (1) · IPC B64C3/00 (1) · IPC B64C33/02 (1) · IPC B64C35/00 (1) · IPC B64C39/00 (1) · IPC CPC B64C13/00 (1) · IPC F41A19/05 (2) · IPC F41G11/00 (1) · IPC F41G3/00 (1)
CPCs:
CPC B64C13/00 (1) · CPC B64C17/00 (1) · CPC B64C27/615 (1) · CPC B64C2700/6218 (1) · CPC B64C2700/6235 (1) · CPC B64C3/00 (1) · CPC B64C33/02 (1) · CPC B64C35/00 (1) · CPC B64C39/008 (1) · CPC F03D3/0445 (1) · CPC F03D9/001 (1) · CPC F03D9/025 (1) · CPC F03D9/12 (1) · CPC F03D9/14 (1) · CPC F03D9/28 (1) · CPC F41A19/05 (2) · CPC F41G11/00 (1) · CPC F41G3/00 (1) · CPC Y02E10/72 (1) · CPC Y02E10/723 (1) · CPC Y02E10/74 (1) · CPC Y02E60/16 (1) · CPC Y02E60/17 (1) · CPC Y02E70/30 (1)
Family year:
1915 (1) · 1916 (6) · 1917 (1) · 1918 (2)
First filing:
No (2) · Yes (8)
Cites these patents:
None (10)
Citations from after 1930:
None (2) · 1 (1) · 7 (1)
Number of text pages:
0 - 30 (10)
Number of claims:
4 - 7 (4) · 7 - 14 (6)
Number of diagram pages:
2 (4) · 3 (2) · 4 (4)
Number of figures:
4 - 8 (4) · 8 - 20 (6)

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