Patent US2868548A successfully refreshed from Google Patents.
US2868548A
Expired / Lapsed
US
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Expanding sander chuck
Assignee: Individual
•
Filing: 1956-10-12
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Granted: 1959-01-13
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Expires: 1976-10-12
Abstract
No abstract record available.
Inventors
- 👤 Milton L Lappin
- 👤 Paul I Zandberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:08
CPC Classifications
B; B24; B24D; B24D9/00; B24D9/02; Y; Y10; Y10T; Y10T279/00; Y10T279/10; Y10T279/1004; Y10T279/1012; Y10T279/17; Y10T279/17411; Y10T279/17418; Y10T279/17427
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) | 1962-01-12 | 1962-07-14 | 1963-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-12 | 1966-07-14 | 1967-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-12 | 1970-07-14 | 1971-01-13 | $7700.00 | Window Closed / Lapsed |