Patent US2817535A successfully refreshed from Google Patents.
US2817535A
Expired / Lapsed
US
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Collets
Assignee: Crawford & Co (tottenham) Ltd
•
Filing: 1953-11-30
•
Granted: 1957-12-24
•
Expires: 1973-11-30
Abstract
No abstract record available.
Inventors
- 👤 Linzell Cecil John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:36
CPC Classifications
B; B23; B23B; B23B31/00; B23B31/02; B23B31/10; B23B31/12; B23B31/20; B23B31/201; B23B31/202; Y; Y10; Y10T; Y10T279/00; Y10T279/17; Y10T279/17564
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1132550A
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US839577A
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US870106A
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DE398951C
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US1679515A
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US2078033A
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US2065817A
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US2402571A
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US2478102A
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US2441599A
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US2591287A
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US2631860A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-12-23 | 1961-06-24 | 1961-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-12-23 | 1965-06-24 | 1965-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-12-23 | 1969-06-24 | 1969-12-24 | $7700.00 | Window Closed / Lapsed |