US2808556A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Two phase step motor
Assignee: Individual
•
Filing: 1957-04-01
•
Granted: 1957-10-01
•
Expires: 1977-04-01
Abstract
No abstract record available.
Inventors
- 👤 Albert G Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:18
CPC Classifications
H; H02; H02K; H02K37/00; H02K37/02; H02K37/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1367486A
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US1440729A
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US1977745A
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US2213108A
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US2124672A
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US2449020A
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US2507798A
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US2578648A
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US2567422A
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US2515944A
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US2528181A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-09-30 | 1961-04-01 | 1961-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-30 | 1965-04-01 | 1965-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-30 | 1969-04-01 | 1969-10-01 | $7700.00 | Window Closed / Lapsed |