US2879345A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Selective switching apparatus
Assignee: Individual
•
Filing: 1956-02-01
•
Granted: 1959-03-24
•
Expires: 1976-02-01
Abstract
No abstract record available.
Inventors
- 👤 Jr Donald P Mossman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:25
CPC Classifications
H; H01; H01H; H01H27/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2458552A
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US2502042A
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US2506987A
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US2558188A
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US2582131A
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US2571040A
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US2591684A
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US2684411A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-03-23 | 1962-09-22 | 1963-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-23 | 1966-09-22 | 1967-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-23 | 1970-09-22 | 1971-03-24 | $7700.00 | Window Closed / Lapsed |