Patent US1683581A successfully refreshed from Google Patents.
US1683581A
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Electrical operation and control of machine tools
Assignee: KELLER MECHANICAL ENGINEERING Corp
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Filing: 1924-03-04
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Granted: 1928-09-04
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Expires: 1944-03-04
Abstract
No abstract record available.
Inventors
- 👤 John C Shaw
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:00
CPC Classifications
B; B23; B23Q; B23Q35/00; B23Q35/04; B23Q35/24; B23Q35/26; B23Q35/30; B23Q35/32; B23Q35/08; B23Q35/12; B23Q35/121; B23Q35/122; Y; Y10; Y10T; Y10T409/00; Y10T409/30; Y10T409/30084; Y10T409/301176; Y10T409/301624; Y10T409/30168; Y10T409/301904; Y10T409/30196
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) | 1931-09-04 | 1932-03-05 | 1932-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1935-09-04 | 1936-03-05 | 1936-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1939-09-04 | 1940-03-05 | 1940-09-04 | $7700.00 | Window Closed / Lapsed |