Patent US2911970A successfully refreshed from Google Patents.
US2911970A
Expired / Lapsed
US
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Cervical collar
Assignee: Prosthetic & Orthopedic Supply
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Filing: 1958-12-01
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Granted: 1959-11-10
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Expires: 1978-12-01
Abstract
No abstract record available.
Inventors
- 👤 William L Bartels
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:00
CPC Classifications
A; A61; A61F; A61F5/00; A61F5/01; A61F5/04; A61F5/05; A61F5/055; Y; Y10; Y10S; Y10S128/00; Y10S128/23
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2801630A
Cited
US2828736A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-09 | 1963-05-11 | 1963-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-09 | 1967-05-11 | 1967-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-09 | 1971-05-11 | 1971-11-10 | $7700.00 | Window Closed / Lapsed |