US2867762A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Commutatorless electric motor
Assignee: RCA Corp
•
Filing: 1955-04-29
•
Granted: 1959-01-06
•
Expires: 1975-04-29
Abstract
No abstract record available.
Inventors
- 👤 James N Lehman
- 👤 John B Theiss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:00
CPC Classifications
H; H02; H02K; H02K29/00; H02K29/06; H02K29/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1563084A
Cited
US2427920A
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US2492045A
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US2492435A
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US2574997A
Cited
US2648786A
Cited
US2719944A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-01-05 | 1962-07-07 | 1963-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-05 | 1966-07-07 | 1967-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-05 | 1970-07-07 | 1971-01-06 | $7700.00 | Window Closed / Lapsed |