Patent US2318335A successfully refreshed from Google Patents.
US2318335A
Expired / Lapsed
US
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Spindle control for drilling and tapping machines
Assignee: Cincinnati Bickford Tool Co
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Filing: 1936-02-08
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Granted: 1943-05-04
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Expires: 1956-02-08
Abstract
No abstract record available.
Inventors
- 👤 Lawrence L Schauer
- 👤 John H Mckewen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 07:28
CPC Classifications
B; B23; B23Q; B23Q5/00; B23Q5/54; Y; Y10; Y10T; Y10T408/00; Y10T408/13; Y10T408/65; Y10T408/675; Y10T408/6786
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) | 1946-05-03 | 1946-11-02 | 1947-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1950-05-03 | 1950-11-02 | 1951-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1954-05-03 | 1954-11-02 | 1955-05-04 | $7700.00 | Window Closed / Lapsed |