Patent US2670001A successfully refreshed from Google Patents.
US2670001A
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US
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Electric control for motors
Assignee: Crane Packing Co
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Filing: 1951-03-30
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Granted: 1954-02-23
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Expires: 1971-03-30
Abstract
No abstract record available.
Inventors
- 👤 William H Mcelvenny
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:01
CPC Classifications
B; B21; B21D; B21D39/00; B21D39/08; B21D39/16; Y; Y10; Y10T; Y10T137/00; Y10T137/0971; Y10T137/1007; Y10T29/00; Y10T29/51; Y10T29/5178; Y10T408/00; Y10T408/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1977691A
Cited
US1778644A
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US1717302A
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US1947430A
Cited
US1936620A
Cited
US2467582A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-02-22 | 1957-08-24 | 1958-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-02-22 | 1961-08-24 | 1962-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-02-22 | 1965-08-24 | 1966-02-23 | $7700.00 | Window Closed / Lapsed |