Patent US3017560A successfully refreshed from Google Patents.
US3017560A
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US
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Transistor switching circuits
Assignee: Leeds and Northrup Co
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Filing: 1958-10-01
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Granted: 1962-01-16
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Expires: 1978-10-01
Abstract
No abstract record available.
Inventors
- 👤 Norman E Polster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:44
CPC Classifications
H; H02; H02M; H02M7/00; H02M7/42; H02M7/44; H02M7/48; H02M7/53; H02M7/537; H02M7/538; H02M7/5381; H03; H03K; H03K17/00; H03K17/06; H03K17/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2693572A
Cited
US2783384A
Cited
US2862109A
Cited
US2783380A
Cited
US2862171A
Cited
US2888627A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-01-15 | 1965-07-17 | 1966-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-01-15 | 1969-07-17 | 1970-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-01-15 | 1973-07-17 | 1974-01-16 | $7700.00 | Window Closed / Lapsed |