Patent US3222096A successfully refreshed from Google Patents.
US3222096A
Expired / Lapsed
US
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Rotary tool spindle
Assignee: Skil Corp
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Filing: 1963-04-15
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Granted: 1965-12-07
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Expires: 1983-04-15
Abstract
No abstract record available.
Inventors
- 👤 Frank A Kaman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:23
CPC Classifications
B; B25; B25B; B25B23/00; B25B23/0007; B25B23/0035; Y; Y10; Y10T; Y10T279/00; Y10T279/17; Y10T279/17128; Y10T279/17136; Y10T279/17153; Y10T403/00; Y10T403/70; Y10T403/7047; Y10T403/7061; Y10T403/7098
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2288516A
Cited
US2322949A
Cited
US2455544A
Cited
GB674720A
Cited
US2704681A
Cited
US2991064A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-12-06 | 1969-06-07 | 1969-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-06 | 1973-06-07 | 1973-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-06 | 1977-06-07 | 1977-12-07 | $7700.00 | Window Closed / Lapsed |