US2961568A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filament joint for incandescent lamps
Assignee: General Electric Co
•
Filing: 1957-11-14
•
Granted: 1960-11-22
•
Expires: 1977-11-14
Abstract
No abstract record available.
Inventors
- 👤 Kenneth S G Pertwee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 03:34
CPC Classifications
H; H01; H01K; H01K1/00; H01K1/02; H01K1/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2039772A
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US2300959A
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US2258158A
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US2341716A
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US2434478A
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US2464591A
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US2449679A
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US2462837A
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US2844868A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-11-22 | 1964-05-23 | 1964-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-22 | 1968-05-23 | 1968-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-22 | 1972-05-23 | 1972-11-22 | $7700.00 | Window Closed / Lapsed |