Patent US2870299A successfully refreshed from Google Patents.
US2870299A
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Multiple position switch with built in memory
Assignee: Northrop Grumman Corp
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Filing: 1955-02-28
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Granted: 1959-01-20
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Expires: 1975-02-28
Abstract
No abstract record available.
Inventors
- 👤 George W Cox
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:47
CPC Classifications
B; B61; B61L; B61L19/00; B61L19/06; B61L19/14; H; H01; H01H; H01H21/00; H01H21/02; H01H21/025; H01H9/00; H01H9/0066; H01H9/16; H01H9/161
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) | 1962-01-19 | 1962-07-21 | 1963-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-19 | 1966-07-21 | 1967-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-19 | 1970-07-21 | 1971-01-20 | $7700.00 | Window Closed / Lapsed |