Patent GB-1914-2711

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This is another case in which an initial Provisional Specification number, in this case No. 2711, is also that under which the entire document and the Complete Specification are designated. Provisional Specifications No. 10195 and No. 13140 have the application dates of April 28, 1914 and May 28, 1914, respectively.

That is, No. 2711 was filed provisionally on February 2, 1914 and it was filed as a Complete Specification on September 2, 1914, with the other Provisional Specifications intervening in the chronology.

  • Inventor location: Eldon Street House, Eldon Street, London, County of London, GB
  • Inventor occupation: Civil Engineer
  • Patent agent location: Jessel Chambers, 88, 89, and 90, Chancery Lane, London, W.C.


Year filed 1914
Year granted 1915
Office GB
Patent number 2711
Inventors Everard Richard Calthrop
Inventor country GB
Applicant person Everard Richard Calthrop
Applicant firm
Applicant type INDIV
Applicant is inventor? Yes
Original title Improvements in and relating to Parachutes
English title Complete system of parachute release or launching
Tech fields parachutes
Filing date 1914/02/02
Full specification filed date 1914/09/02
Application number GBD191402711
Grant date 1915/02/02
Granted? Yes
Publication date
Supplementary to patent
Related to aircraft? Yes
Serial number
Patent agent A. E. White
Assigned to
National tech categories
IPCs IPC B64D17/72
CPCs CPC B64D17/72 (EP)
Family year 1914
First filing? No
Cites these patents
Citations from after 1930
Application ID
INPADOC family ID
Number of text pages 13
Number of diagram pages 2
Number of figures 11
Number of claims 10