US3470872A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pivoted retractor with shielded spacer teeth
Assignee: Individual
•
Filing: 1966-11-25
•
Granted: 1969-10-07
•
Expires: 1986-11-25
Abstract
No abstract record available.
Inventors
- 👤 Herman R Grieshaber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:00
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/02; A61B17/0206; A61B17/28; A61B17/2812; A61B17/2833; A61B2017/2837; Y; Y10; Y10T; Y10T29/00; Y10T29/53; Y10T29/53683
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1123243A
Cited
US1616621A
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US1852542A
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US2250400A
Cited
US2293984A
Cited
US2481007A
Cited
US3038467A
Cited
US3176682A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-06 | 1973-04-07 | 1973-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-06 | 1977-04-07 | 1977-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-06 | 1981-04-07 | 1981-10-07 | $7700.00 | Window Closed / Lapsed |