|
US2763151A
|
Differential oxygen analyzer |
Expired / Lapsed
|
1952-08-18 |
1956-09-18 |
0 |
Details
|
|
US2699069A
|
Fluid pressure gauge |
Expired / Lapsed
|
1948-06-24 |
1955-01-11 |
0 |
Details
|
|
US2652727A
|
Device for measuring absolute pressure |
Expired / Lapsed
|
1947-09-24 |
1953-09-22 |
0 |
Details
|
|
US2594716A
|
Electronic program controller |
Expired / Lapsed
|
1948-05-22 |
1952-04-29 |
0 |
Details
|
|
US2438202A
|
Adjustable cam |
Expired / Lapsed
|
1943-12-22 |
1948-03-23 |
0 |
Details
|