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Patent US2568089A successfully refreshed from Google Patents.
US2568089A
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US
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Holder for drills or the like
Assignee: Individual
•
Filing: 1947-02-14
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Granted: 1951-09-18
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Expires: 1967-02-14
Abstract
No abstract record available.
Inventors
- 👤 Walter A Pendleton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:05
CPC Classifications
B; B01; B01L; B01L9/00; B01L9/06; B25; B25H; B25H3/00; B25H3/003
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) | 1954-09-17 | 1955-03-19 | 1955-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-09-17 | 1959-03-19 | 1959-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-09-17 | 1963-03-19 | 1963-09-18 | $7700.00 | Window Closed / Lapsed |