Patent US2909806A successfully refreshed from Google Patents.
US2909806A
Expired / Lapsed
US
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Dental castings
Assignee: Individual
•
Filing: 1956-09-25
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Granted: 1959-10-27
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Expires: 1976-09-25
Abstract
No abstract record available.
Inventors
- 👤 Arthur W Cheythey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:59
CPC Classifications
A; A61; A61C; A61C13/00; A61C13/225; A61C13/2255; A61C13/0003; A61C13/0006; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1052; Y10T156/1062
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1036561A
Cited
US2411001A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-10-26 | 1963-04-27 | 1963-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-26 | 1967-04-27 | 1967-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-26 | 1971-04-27 | 1971-10-27 | $7700.00 | Window Closed / Lapsed |