US2022436A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Convertible upright drill
Assignee: Cincinnati Bickford Tool Co
•
Filing: 1932-01-08
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Granted: 1935-11-26
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Expires: 1952-01-08
Abstract
No abstract record available.
Inventors
- 👤 Lawrence L Schauer
- 👤 Augustus M Sosa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:16
CPC Classifications
B; B23; B23B; B23B39/00; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19219; Y10T74/19242; Y10T74/19293; Y10T74/19298; Y10T74/19307; Y10T74/19377; Y10T74/19414; Y10T74/19484; Y10T74/19493
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1938-11-25 | 1939-05-27 | 1939-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1942-11-25 | 1943-05-27 | 1943-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1946-11-25 | 1947-05-27 | 1947-11-26 | $7700.00 | Window Closed / Lapsed |