US2487203A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flexible drive for drills
Assignee: Individual
•
Filing: 1946-07-17
•
Granted: 1949-11-08
•
Expires: 1966-07-17
Abstract
No abstract record available.
Inventors
- 👤 Arthur L Wilber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 01:59
CPC Classifications
B; B23; B23Q; B23Q5/00; B23Q5/02; B23Q5/04; B23Q5/043; B23Q5/045; B23B; B23B45/00; Y; Y10; Y10T; Y10T279/00; Y10T279/34; Y10T279/3406; Y10T279/3412; Y10T408/00; Y10T408/65; Y10T408/665
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR705928A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-11-07 | 1953-05-09 | 1953-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-11-07 | 1957-05-09 | 1957-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-11-07 | 1961-05-09 | 1961-11-08 | $7700.00 | Window Closed / Lapsed |