US3099953A
1961-12-21
Torque tube control device
US2907369A
1955-09-02
Apparatus for forming stressed panels and having guide bars for initially bending undulations in sheet material before forming a channel from each undulation
US3023489A
1954-05-12
Structural panel
US2836054A
1953-11-16
System of raised wall construction
US2620551A
1949-02-21
Method of making window frames
US2683021A
1948-09-30
Drill tool
US2620651A
1946-07-08
Prefabricated building structure
US2512592A
1946-05-03
Crankless pump
US2484071A
1946-04-01
Lawn mower
US2361171A
1942-09-19
Universal milling attachment
US2324355A
1941-06-02
Dual automatic intermitting unit
US2346248A
1941-05-29
Means for flowing liquid from wells
US2324132A
1941-02-10
Automatic intermitting unit
US2280279A
1940-06-29
Well pump
US2281019A
1940-04-04
Swivel connection
US2268796A
1939-08-05
Sectional derrick
US2290735A
1939-03-20
Automatic cathead
US2171171A
1938-06-09
Well pump
US2195764A
1938-05-10
Valve
US2177977A
1937-05-13
Motor
