Patent US-1914-1150755

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B64C1/1492 is likely what got this patent into the system. I'd personally never applied the bulk B64 criteria method to US material. There may be an American factor of non-aero skewing of the otherwise great per volume value of B64.AvionHerbert (talk) 10:56, 19 May 2025 (PDT)

Sources


Year filed 1914
Year granted 1915
Office US
Patent number 1150755
Inventors John E. Frey, Thomas F. Berrill
Inventor country US
Inventor location Brooklyn, NY, New York City, Kings county, NY, New York
Applicant person
Applicant firm
Applicant type INDIV
Applicant is inventor? Yes
Original title Metal Door
English title Metal Door
Tech fields
Filing date 1914/02/14
Full specification filed date
Application number 1914818682
Grant date 1915/08/17
Granted? Yes
Publication date
Supplementary to patent
Related to aircraft? 1
Serial number 818682
Patent agent
Assigned to
National tech categories
IPCs
CPCs CPC B64C1/1492, CPC E06B3/5454
Family year
First filing? No
Cites these patents
Citations from after 1930
Application ID 47730200
INPADOC family ID 44066580
Number of text pages
Number of diagram pages
Number of figures
Number of claims