Patent US-1911-1028502

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This is a range finder for launching a projectile from airplane at a chosen point on the ground. Operator uses altitude measurement from barometer to select the appropriate marked adjustment on an overlay.

Sources

  • Inventor location: Inglewood (possibly an antique spelling), California
  • Witnesses: Andre K. Martell, Hanne Mendenhall

Patent family descending from Patent US-1911-1028502


Year filed 1911
Year granted 1912
Office US
Patent number 1028502
Inventors Frank Lee Slack
Inventor country US
Applicant person Frank Lee Slack
Applicant firm
Applicant type INDIV
Applicant is inventor? Yes
Original title Airplane sighting device
English title Airplane sighting devices
Tech fields airplane, navigation, subsystem, bomb, projectile, instrument, barometer, cybernetics, aiming, military
Filing date 1911/02/07
Full specification filed date
Application number
Grant date 1912/06/04
Granted? Yes
Publication date
Supplementary to patent
Related to aircraft? Yes
Serial number
Patent agent Claude L. McKesson
Assigned to
National tech categories USPC 356/27, USPC 89/41.21, USPC 89/41.19, USPC 33/229
IPCs IPC G01P3/36
CPCs CPC G01P3/36
Family year 1911
First filing? Yes
Cites these patents
Citations from after 1930
Application ID
INPADOC family ID
Number of text pages 2
Number of diagram pages 2
Number of figures 5
Number of claims 6