Patent US2885832A successfully refreshed from Google Patents.
US2885832A
Expired / Lapsed
US
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Art of forming surfaces of peculiar contours
Assignee: RCA Corp
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Filing: 1956-07-20
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Granted: 1959-05-12
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Expires: 1976-07-20
Abstract
No abstract record available.
Inventors
- 👤 Joseph A Briggs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:12
CPC Classifications
B; B23; B23Q; B23Q1/00; B23Q1/25; B23Q1/44; B23Q1/50; B23Q1/54; B23Q1/5406; B23Q1/5412; B23Q35/00; B23Q35/04; B23Q35/08; B23Q35/10; B23Q35/101; B24; B24B; B24B13/00; B24B13/06; B24B13/065
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1171174A
Cited
US2392478A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-05-11 | 1962-11-10 | 1963-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-11 | 1966-11-10 | 1967-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-11 | 1970-11-10 | 1971-05-12 | $7700.00 | Window Closed / Lapsed |