US3520228A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spindle orienting and drawbolt malfunction sensing machine tool control system
Assignee: Giddings and Lewis LLC
•
Filing: 1967-04-10
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Granted: 1970-07-14
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Expires: 1987-04-10
Abstract
No abstract record available.
Inventors
- 👤 Jack A Wohlfeil
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:14
CPC Classifications
B; B23; B23Q; B23Q5/00; B23Q5/02; B23Q5/04; B23Q5/20; B23Q15/00; B23Q15/20; B23Q15/22; B23Q15/26; Y; Y10; Y10T; Y10T409/00; Y10T409/30; Y10T409/309352; Y10T409/309408; Y10T409/309464; Y10T483/00; Y10T483/13; Y10T483/136; Y10T483/17; Y10T483/1733; Y10T483/1736; Y10T483/1743; Y10T483/1745
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2192437A
Cited
US2338975A
Cited
US2753502A
Cited
US2790280A
Cited
US2908357A
Cited
US3254567A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-07-13 | 1974-01-12 | 1974-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-07-13 | 1978-01-12 | 1978-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-07-13 | 1982-01-12 | 1982-07-14 | $7700.00 | Window Closed / Lapsed |