Patent US2023841A successfully refreshed from Google Patents.
US2023841A
Expired / Lapsed
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Two-motor control for screw feed machine tool units
Assignee: Individual
•
Filing: 1932-07-11
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Granted: 1935-12-10
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Expires: 1952-07-11
Abstract
No abstract record available.
Inventors
- 👤 Kingsbury Edward Joslin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:32
CPC Classifications
H; H02; H02P; H02P5/00; H02P5/74; H02P5/747; H02P5/753; Y; Y10; Y10T; Y10T408/00; Y10T408/16; Y10T408/165; Y10T408/17; Y10T408/172; Y10T408/65; Y10T408/675; Y10T408/6771; Y10T408/6774; Y10T74/00; Y10T74/18; Y10T74/18568; Y10T74/18576; Y10T74/18624; Y10T74/1864; Y10T82/00; Y10T82/25; Y10T82/2531; Y10T82/2533; Y10T82/2535; Y10T82/2572; Y10T82/2574
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) | 1938-12-09 | 1939-06-10 | 1939-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1942-12-09 | 1943-06-10 | 1943-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1946-12-09 | 1947-06-10 | 1947-12-10 | $7700.00 | Window Closed / Lapsed |