|
US1149701A
|
|
Ductile filament.
|
|
US1074333A
|
|
Glower for electrical incandescent lamps.
|
|
US985474A
|
|
Illuminant for electrical incandescent lamps.
|
|
US1023485A
|
|
Illuminant for electrical incandescent lamps.
|
|
US982751A
|
|
Glower for electrical incandescent lamps.
|
|
US892332A
|
|
Electrical incandescent lamp.
|
|
US844213A
|
|
Illuminant for incandescent electric lamps.
|
|
US657142A
|
|
Method of reinforcing incandescent gas-mantles.
|
|
US657141A
|
|
Incandescent mantle.
|
|
CA67658A
|
|
Incandescent electric lamp
|
|
US633668A
|
|
Composite wire and process of manufacture.
|
|
US633350A
|
|
Burner for incandescent lamps.
|
|
CA31406A
|
|
Process of obtaining manganese alloys
|
