Patent US2689320A successfully refreshed from Google Patents.
US2689320A
Expired / Lapsed
US
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Motor speed control system
Assignee: Raytheon Co
•
Filing: 1952-06-20
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Granted: 1954-09-14
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Expires: 1972-06-20
Abstract
No abstract record available.
Inventors
- 👤 Joseph P Aloisio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:34
CPC Classifications
H; H02; H02P; H02P7/00; H02P7/06; H02P7/18; H02P7/24; H02P7/26; Y; Y10; Y10S; Y10S388/00; Y10S388/907; Y10S388/913; Y10S388/914
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2482101A
Cited
US2600003A
Cited
US2558086A
Cited
US2558094A
Cited
US2552206A
Cited
US2572824A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-09-13 | 1958-03-15 | 1958-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-09-13 | 1962-03-15 | 1962-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-09-13 | 1966-03-15 | 1966-09-14 | $7700.00 | Window Closed / Lapsed |