Patent US2640135A successfully refreshed from Google Patents.
US2640135A
Expired / Lapsed
US
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Electrode
Assignee: General Electric Co
•
Filing: 1950-03-30
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Granted: 1953-05-26
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Expires: 1970-03-30
Abstract
No abstract record available.
Inventors
- 👤 James D Cobine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:50
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/22; B23K35/222; B23K9/00; B23K9/16; B23K9/167
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB190808421A
Cited
GB190720227A
Cited
US982751A
Cited
US1918212A
Cited
US1977361A
Cited
US2314628A
Cited
US2473601A
Cited
US2515559A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-05-25 | 1956-11-24 | 1957-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-05-25 | 1960-11-24 | 1961-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-05-25 | 1964-11-24 | 1965-05-26 | $7700.00 | Window Closed / Lapsed |