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US2569697A
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US
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Reversible motor control apparatus
Assignee: WHEELCO INSTR Co
•
Filing: 1948-06-01
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Granted: 1951-10-02
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Expires: 1968-06-01
Abstract
No abstract record available.
Inventors
- 👤 Paul T Semm
- 👤 Robert T Nakasone
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 01:49
CPC Classifications
G; G05; G05B; G05B11/00; G05B11/01; G05B11/012; G05B11/013
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1838084A
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US2025749A
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US2109222A
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US2228163A
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US2192022A
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US2339861A
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US2348177A
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US2331698A
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US2331138A
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US2367869A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-10-01 | 1955-04-02 | 1955-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-10-01 | 1959-04-02 | 1959-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-10-01 | 1963-04-02 | 1963-10-02 | $7700.00 | Window Closed / Lapsed |