US2940441A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Traction device
Assignee: G & D Surgical & Drug Co Inc
•
Filing: 1956-09-21
•
Granted: 1960-06-14
•
Expires: 1976-09-21
Abstract
No abstract record available.
Inventors
- 👤 William C Demarest
- 👤 Malmstrom Edward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:46
CPC Classifications
A; A61; A61H; A61H1/00; A61H1/02; A61H1/0218; A61H1/0229
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1837037A
Cited
US1765669A
Cited
US1914202A
Cited
US1974774A
Cited
US2315997A
Cited
US2273088A
Cited
US2475003A
Cited
US2633125A
Cited
US2690175A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-14 | 1963-12-14 | 1964-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-14 | 1967-12-14 | 1968-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-14 | 1971-12-14 | 1972-06-14 | $7700.00 | Window Closed / Lapsed |