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JOHNSON FRANCIS M

Overview
  • Total Patents
    19
About

JOHNSON FRANCIS M has a total of 19 patent applications. Its first patent ever was published in 1909. It filed its patents most often in United States and Canada. Its main competitors in its focus markets transport, machines and weapons are SARGENT FLETCHER INC, G Q PARACHUTE CO LTD and GIANNAKOPOULOS PAVLOS.

Patent filings in countries

World map showing JOHNSON FRANCIS Ms patent filings in countries
# Country Total Patents
#1 United States 18
#2 Canada 1

Patent filings per year

Chart showing JOHNSON FRANCIS Ms patent filings per year from 1900 to 2020

Focus industries

Top inventors

# Name Total Patents
#1 Johnson Francis M 19

Latest patents

Publication Filing date Title
US2910255A Jettisonable air stair door
US3018733A Multipurpose safety for igniter circuits
US2859896A Chaff dispenser
US3137231A Chaff dispenser system
US3027047A Chaff tape cutter
US2952489A Explosive/mechanical, single mount, bomb rack
US2832632A Explosive/mechanical, single mount bomb rack
US2852299A Wing tank rack explosive bolt assembly
US2954948A Chaff dispensing system
US2738939A Personnel retriever for helicopters
US2703417A Droppable marker light
US2712060A Combined dirigible spot and flood light for aircraft
US2717130A Flexible boat coaming
US2722696A Lighted rescue life line
US2707600A Airborne life boat
US2727254A Droppable motorized emergency rescue capsule
US1020908A Plow-stock.
CA118850A Excavator
US1162863A Track device.