WELCH CLARENCE R has a total of 13 patent applications. Its first patent ever was published in 1907. It filed its patents most often in United States. Its main competitors in its focus markets packaging and shipping, machines and transport are MAXTON MFG CO, LIN GUOBIN and ELEVATOR EQUIP.
# | Country | Total Patents | |
---|---|---|---|
#1 | United States | 13 |
# | Industry | |
---|---|---|
#1 | Packaging and shipping | |
#2 | Machines | |
#3 | Transport | |
#4 | Engines, pumps and turbines | |
#5 | Civil engineering | |
#6 | Machine tools | |
#7 | Mechanical elements |
# | Technology | |
---|---|---|
#1 | Unspecified technologies | |
#2 | Elevators and escalators | |
#3 | Vehicle parts | |
#4 | Earth drilling | |
#5 | Controlling combustion engines | |
#6 | Percussive tools | |
#7 | Steam turbines | |
#8 | Clutches and brakes | |
#9 | Winches |
# | Name | Total Patents |
---|---|---|
#1 | Welch Clarence R | 13 |
Publication | Filing date | Title |
---|---|---|
US1558955A | Safety device for hoists | |
US1543138A | Hoisting-engine controller | |
US1391708A | Pneumatic rock-drill | |
US1452581A | Rock drill | |
US1342728A | Lock for steering-posts of automobiles | |
US1331084A | Automobile-lock | |
US1359213A | Automobile-lock | |
US1150722A | Controlling apparatus for hoisting-engines. | |
US1150721A | Controlling apparatus for hoisting-engines. | |
US1150720A | Controlling apparatus for hoisting-engines. | |
US1108044A | Controlling apparatus for hoisting-engines. | |
US965779A | Controlling apparatus for hoisting-engines. | |
US888946A | Governor attachment. |