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US2621406A
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Apparatus for use in the preparation of dental prosthetic devices
Assignee: Individual
•
Filing: 1950-03-07
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Granted: 1952-12-16
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Expires: 1970-03-07
Abstract
No abstract record available.
Inventors
- 👤 Duncan S Mcphee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:06
CPC Classifications
A; A61; A61C; A61C11/00; A61C11/02; A61C11/003
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1362602A
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US1674088A
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US1703105A
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US1830248A
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US1931804A
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FR720175A
Cited
US2001963A
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US2171759A
Cited
US2334643A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-12-16 | 1956-06-16 | 1956-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-16 | 1960-06-16 | 1960-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-16 | 1964-06-16 | 1964-12-16 | $7700.00 | Window Closed / Lapsed |