Patent US5966707A successfully refreshed from Google Patents.
Patent US2505236A successfully refreshed from Google Patents.
US2505236A
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Retractive pilot for circle cutters
Assignee: Individual
•
Filing: 1946-10-04
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Granted: 1950-04-25
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Expires: 1966-10-04
Abstract
No abstract record available.
Inventors
- 👤 John F Dooley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:32
CPC Classifications
B; B23; B23B; B23B51/00; B23B51/04; B23B51/05; Y; Y10; Y10S; Y10S30/00; Y10S30/06; Y10T; Y10T408/00; Y10T408/55; Y10T408/56; Y10T408/5605; Y10T408/564; Y10T408/5653; Y10T408/83; Y10T408/85; Y10T82/00; Y10T82/25; Y10T82/2522
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US67194A
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US94870A
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US1354848A
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US2223485A
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US2263637A
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US2359091A
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US2360942A
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US2406442A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-04-24 | 1953-10-24 | 1954-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-04-24 | 1957-10-24 | 1958-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-04-24 | 1961-10-24 | 1962-04-25 | $7700.00 | Window Closed / Lapsed |