|
US2641750A
|
Indicator system for gas heated appliances |
Expired / Lapsed
|
1951-01-27 |
1953-06-09 |
0 |
Details
|
|
US2524438A
|
Thermostatic switch for clothes driers |
Expired / Lapsed
|
1949-02-05 |
1950-10-03 |
0 |
Details
|
|
US2422526A
|
Heating system |
Expired / Lapsed
|
1941-06-20 |
1947-06-17 |
0 |
Details
|
|
US2218908A
|
Snap switch |
Expired / Lapsed
|
1937-09-28 |
1940-10-22 |
0 |
Details
|
|
US1946679A
|
Thermostatic fuel control device |
Expired / Lapsed
|
1930-02-17 |
1934-02-13 |
0 |
Details
|