Patent DE469703C successfully refreshed from Google Patents.
US2878809A
Expired / Lapsed
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Surgical drill attachment
Assignee: Richards Manufacturing Co LP
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Filing: 1958-01-23
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Granted: 1959-03-24
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Expires: 1978-01-23
Abstract
No abstract record available.
Inventors
- 👤 Harry T Treace
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:43
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/16; A61B17/1662; A61B17/1679; A61F; A61F11/00; A61F11/20; A61B17/1613; A61B17/1631; A61B17/28; A61B17/29; A61B2017/2901; A61B2017/2904; Y; Y10; Y10S; Y10S408/00; Y10S408/714; Y10T; Y10T408/00; Y10T408/65; Y10T408/665; Y10T408/89; Y10T408/907
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-03-23 | 1962-09-22 | 1963-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-23 | 1966-09-22 | 1967-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-23 | 1970-09-22 | 1971-03-24 | $7700.00 | Window Closed / Lapsed |