US2773402A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means for form cutting structure at the peripheries of round holes in curved elements
Assignee: FALCON TOOL Co
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Filing: 1954-11-12
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Granted: 1956-12-11
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Expires: 1974-11-12
Abstract
No abstract record available.
Inventors
- 👤 Ralph A Edens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:23
CPC Classifications
B; B23; B23B; B23B51/00; B23B51/10; B23B51/102; B23B2215/00; B23B2215/72; Y; Y10; Y10T; Y10T408/00; Y10T408/55; Y10T408/564; Y10T408/83; Y10T408/85; Y10T408/858; Y10T408/8583; Y10T82/00; Y10T82/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-12-11 | 1960-06-11 | 1960-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-11 | 1964-06-11 | 1964-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-11 | 1968-06-11 | 1968-12-11 | $7700.00 | Window Closed / Lapsed |