US3263091A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transistorized synchronized inverter
Assignee: ConocoPhillips Co
•
Filing: 1963-09-10
•
Granted: 1966-07-26
•
Expires: 1983-09-10
Abstract
No abstract record available.
Inventors
- 👤 Jimmy R Cole
- 👤 Douglas S Sullivan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:26
CPC Classifications
H; H03; H03F; H03F3/00; H03F3/30; H03F3/3081; G; G01; G01V; G01V1/00; G01V1/02; G01V1/04; H02; H02M; H02M7/00; H02M7/42; H02M7/44; H02M7/48; H02M7/53; H02M7/537; H03F2203/00; H03F2203/30; H03F2203/30099; H03F2203/30132
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2821639A
Cited
US2872582A
Cited
US3080534A
Cited
US2972710A
Cited
US3059191A
Cited
US3074030A
Cited
US3078379A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-07-25 | 1970-01-24 | 1970-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-25 | 1974-01-24 | 1974-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-25 | 1978-01-24 | 1978-07-26 | $7700.00 | Window Closed / Lapsed |