Patent US2942509A successfully refreshed from Google Patents.
US2942509A
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Spherical turning device
Assignee: American Steel Foundries
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Filing: 1956-04-24
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Granted: 1960-06-28
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Expires: 1976-04-24
Abstract
No abstract record available.
Inventors
- 👤 Foster Theodore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:53
CPC Classifications
B; B23; B23Q; B23Q35/00; B23Q35/04; B23Q35/08; B23Q35/10; B23Q35/101; B23Q35/102; Y; Y10; Y10T; Y10T408/00; Y10T408/91; Y10T408/93; Y10T408/935; Y10T82/00; Y10T82/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US440319A
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US1339816A
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US1492103A
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US1485258A
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US2104238A
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US2252627A
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US2329246A
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US2610550A
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US2652731A
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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) | 1963-06-28 | 1963-12-28 | 1964-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-28 | 1967-12-28 | 1968-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-28 | 1971-12-28 | 1972-06-28 | $7700.00 | Window Closed / Lapsed |