|
US2022314A
|
Electrical resistor and its manufacture |
Expired / Lapsed
|
1933-12-29 |
1935-11-26 |
0 |
Details
|
|
US2003625A
|
Terminal connection for electric heating elements |
Expired / Lapsed
|
1932-03-04 |
1935-06-04 |
0 |
Details
|
|
US1765572A
|
Process for producing electrical resistance elements and th… |
Expired / Lapsed
|
1923-05-05 |
1930-06-24 |
0 |
Details
|