Patent US2878346A successfully refreshed from Google Patents.
US2878346A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flush key electrical switch
Assignee: Lockheed Martin Corp
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Filing: 1956-10-22
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Granted: 1959-03-17
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Expires: 1976-10-22
Abstract
No abstract record available.
Inventors
- 👤 Kenneth E Andrews
- 👤 John E Davis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:59
CPC Classifications
H; H01; H01H; H01H23/00; H01H23/02; H01H23/025; H01H23/12; H01H23/14; H01H23/143; H01H23/145
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-03-16 | 1962-09-15 | 1963-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-16 | 1966-09-15 | 1967-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-16 | 1970-09-15 | 1971-03-17 | $7700.00 | Window Closed / Lapsed |