US2572377A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bimetallic backing for artificial teeth
Assignee: COLUMBUS DENTAL Manufacturing CO
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Filing: 1949-12-06
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Granted: 1951-10-23
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Expires: 1969-12-06
Abstract
No abstract record available.
Inventors
- 👤 Ross E O'morrow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 06:00
CPC Classifications
A; A61; A61C; A61C13/00; A61C13/10; A61C13/102; A61C13/1023; A61K; A61K6/00; A61K6/80; A61K6/84; A61K6/844; B; B32; B32B; B32B15/00; B32B15/04; B32B15/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US192167A
Cited
US646764A
Cited
US937284A
Cited
US1296938A
Cited
US1561247A
Cited
US1946231A
Cited
GB541439A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-10-22 | 1955-04-23 | 1955-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-10-22 | 1959-04-23 | 1959-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-10-22 | 1963-04-23 | 1963-10-23 | $7700.00 | Window Closed / Lapsed |