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Patent US2697335A successfully refreshed from Google Patents.
US2697335A
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US
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Rolling mill spindle and coupling
Assignee: Birdsboro Steel Foundry & Mach
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Filing: 1951-06-11
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Granted: 1954-12-21
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Expires: 1971-06-11
Abstract
No abstract record available.
Inventors
- 👤 Edward T Peterson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:37
CPC Classifications
B; B21; B21B; B21B35/00; B21B35/14; B21B35/142; B21B35/145; B21B35/146; F; F16; F16D; F16D3/00; F16D3/16; F16D3/26; F16D3/265; Y; Y10; Y10S; Y10S464/00; Y10S464/902
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1359601A
Cited
US1552056A
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US1674148A
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US2111693A
Cited
US2372289A
Cited
US2305703A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-12-20 | 1958-06-21 | 1958-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-12-20 | 1962-06-21 | 1962-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-12-20 | 1966-06-21 | 1966-12-21 | $7700.00 | Window Closed / Lapsed |