US2497451A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Procedure for the preparation of prostheses of great strength from methyl methacrylate monomer and polymer
Assignee: Individual
•
Filing: 1945-08-17
•
Granted: 1950-02-14
•
Expires: 1965-08-17
Abstract
No abstract record available.
Inventors
- 👤 Haefeli Max
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:37
CPC Classifications
A; A61; A61K; A61K6/00; A61K6/80; A61K6/884; A61K6/887; Y; Y10; Y10S; Y10S525/00; Y10S525/937; Y10S528/00; Y10S528/92
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2028776A
Cited
US2297248A
Cited
GB484343A
Cited
US2234993A
Cited
GB498877A
Cited
US2335371A
Cited
US2347320A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-02-13 | 1953-08-15 | 1954-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-02-13 | 1957-08-15 | 1958-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-02-13 | 1961-08-15 | 1962-02-14 | $7700.00 | Window Closed / Lapsed |