US2912871A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Speed control and reversing drive for drill press
Assignee: Individual
•
Filing: 1955-08-04
•
Granted: 1959-11-17
•
Expires: 1975-08-04
Abstract
No abstract record available.
Inventors
- 👤 Benjamin J Velkoff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 04:20
CPC Classifications
B; B23; B23Q; B23Q5/00; B23Q5/02; B23Q5/04; F; F16; F16H; F16H3/00; F16H2712/00; F16H2712/06
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US948825A
Cited
US1311912A
Cited
US644341A
Cited
US1417699A
Cited
US1520625A
Cited
US2073704A
Cited
US2054692A
Cited
US2176572A
Cited
US2224309A
Cited
US2360181A
Cited
US2722841A
Cited
US2670630A
Cited
US2664756A
Cited
US2693710A
Cited
US2780107A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-16 | 1963-05-18 | 1963-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-16 | 1967-05-18 | 1967-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-16 | 1971-05-18 | 1971-11-17 | $7700.00 | Window Closed / Lapsed |