|
US2022110A
|
Coin-operated electric switch |
Expired / Lapsed
|
1935-05-17 |
1935-11-26 |
0 |
Details
|
|
US1968149A
|
Phonograph pick-up mechanism |
Expired / Lapsed
|
1931-08-17 |
1934-07-31 |
0 |
Details
|
|
US1938810A
|
Automatic phonograph |
Expired / Lapsed
|
1930-11-17 |
1933-12-12 |
0 |
Details
|
|
US1931487A
|
Automatic phonograph |
Expired / Lapsed
|
1931-06-27 |
1933-10-24 |
0 |
Details
|
|
US1927260A
|
Remote control for radios and the like |
Expired / Lapsed
|
1933-03-30 |
1933-09-19 |
0 |
Details
|