Patent US2929889A successfully refreshed from Google Patents.
US2929889A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bulb for mercury switches and the like
Assignee: Individual
•
Filing: 1959-02-18
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Granted: 1960-03-22
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Expires: 1979-02-18
Abstract
No abstract record available.
Inventors
- 👤 Efther Jean
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 03:10
CPC Classifications
H; H01; H01H; H01H29/00; H01H29/02; H01H29/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2583434A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-03-22 | 1963-09-21 | 1964-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-22 | 1967-09-21 | 1968-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-22 | 1971-09-21 | 1972-03-22 | $7700.00 | Window Closed / Lapsed |