Patent US2453972A successfully refreshed from Google Patents.
US2453972A
Expired / Lapsed
US
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Machine for cutting and polishing nonspherical or conical surfaces by means of abrasive band tools
Assignee: Individual
•
Filing: 1947-04-14
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Granted: 1948-11-16
•
Expires: 1967-04-14
Abstract
No abstract record available.
Inventors
- 👤 Clave Serge
- 👤 Clave Marcel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:28
CPC Classifications
B; B24; B24B; B24B21/00; B24B21/004; Y; Y10; Y10S; Y10S280/00; Y10S280/05
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1630775A
Cited
US1675183A
Cited
US1881162A
Cited
US1912016A
Cited
US2109669A
Cited
US2258733A
Cited
US2386850A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-11-16 | 1952-05-17 | 1952-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-11-16 | 1956-05-17 | 1956-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-11-16 | 1960-05-17 | 1960-11-16 | $7700.00 | Window Closed / Lapsed |