US2981855A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Synchronous motor
Assignee: Consolidated Electronics Industries Corp
•
Filing: 1956-03-15
•
Granted: 1961-04-25
•
Expires: 1976-03-15
Abstract
No abstract record available.
Inventors
- 👤 Loisius J A Van Lieshout
- 👤 William D Riggs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:21
CPC Classifications
H; H02; H02K; H02K21/00; H02K21/12; H02K21/14; H02K21/145; H02K2201/00; H02K2201/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2064090A
Cited
US2101665A
Cited
GB500962A
Cited
US2437142A
Cited
US2488729A
Cited
US2683230A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-04-24 | 1964-10-24 | 1965-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-24 | 1968-10-24 | 1969-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-24 | 1972-10-24 | 1973-04-25 | $7700.00 | Window Closed / Lapsed |