E R CALTHROP S AERIAL PATENTS has a total of 24 patent applications. Its first patent ever was published in 1918. It filed its patents most often in United States, Canada and France. Its main competitors in its focus markets transport, machines and optics are BOOTH WILLIAM R, AIRBORNE SYSTEMS LTD and P D OF MIAMI INC.
# | Country | Total Patents | |
---|---|---|---|
#1 | United States | 8 | |
#2 | Canada | 6 | |
#3 | France | 5 | |
#4 | Germany | 3 | |
#5 | United Kingdom | 2 |
# | Industry | |
---|---|---|
#1 | Transport | |
#2 | Machines | |
#3 | Optics | |
#4 | Mechanical elements |
# | Technology | |
---|---|---|
#1 | Parachutes | |
#2 | Unspecified technologies | |
#3 | Cameras | |
#4 | Nails |
# | Name | Total Patents |
---|---|---|
#1 | Richard Calthrop Everard | 7 |
#2 | Calthrop Everard Richard | 4 |
#3 | Calthrop Everad Richard | 1 |
#4 | Calthrop Everard | 1 |
#5 | William Schollar Percy | 1 |
Publication | Filing date | Title |
---|---|---|
DE392510C | Aircraft | |
US1445293A | Aerial craft | |
DE400726C | Parachute | |
DE364410C | Suspension device for parachutes with resilient links between the parachute and the tether for the person jumping | |
US1466988A | Parachute | |
US1392260A | Retaining and releasing device for ropes, cordage, and the like | |
US1369395A | Parachute | |
US1353378A | Parachute | |
GB152725A | Improvements relating to retaining and releasing devices for ropes, cordage and the like | |
GB152726A | Improvements in and relating to the spooling of tapes and the like | |
US1345582A | Parachute | |
US1436011A | Parachute | |
US1401040A | Safety spring-sling particularly adapted for use with parachutes | |
CA204584A | Parachute | |
CA202794A | Parachute | |
CA205325A | Parachute fastener | |
CA223829A | Parachute | |
CA224028A | Parachute | |
CA204756A | Parachute |