US2883890A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic drill changer for chucks
Assignee: Individual
•
Filing: 1958-01-20
•
Granted: 1959-04-28
•
Expires: 1978-01-20
Abstract
No abstract record available.
Inventors
- 👤 Israel J Fink
- 👤 Edgar D Price
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:55
CPC Classifications
B; B23; B23Q; B23Q3/00; B23Q3/155; B23Q3/157; B23Q3/15706; B23Q17/00; B23Q17/09; B23Q7/00; B23Q7/08; Y; Y10; Y10T; Y10T29/00; Y10T29/51; Y10T29/5178; Y10T408/00; Y10T408/65; Y10T408/675; Y10T408/6779; Y10T408/83; Y10T483/00; Y10T483/17; Y10T483/1733; Y10T483/179; Y10T82/00; Y10T82/25; Y10T82/2572
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2640253A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-04-27 | 1962-10-27 | 1963-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-27 | 1966-10-27 | 1967-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-27 | 1970-10-27 | 1971-04-28 | $7700.00 | Window Closed / Lapsed |