US2854869A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic accurate depth control for machine tools
Assignee: Leland Gifford Co
•
Filing: 1954-03-31
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Granted: 1958-10-07
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Expires: 1974-03-31
Abstract
No abstract record available.
Inventors
- 👤 Eric J Hirvonen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:22
CPC Classifications
B; B23; B23Q; B23Q5/00; B23Q5/22; B23Q5/52; B23Q2705/00; B23Q2705/22; Y; Y10; Y10T; Y10T29/00; Y10T29/51; Y10T29/5178; Y10T408/00; Y10T408/16; Y10T408/17; Y10T408/21; Y10T408/65; Y10T408/675; Y10T408/6757
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1911138A
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US2084562A
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US2114389A
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US2243379A
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US2287559A
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US2235393A
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US2359470A
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US2495312A
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US2492092A
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US2690205A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-10-06 | 1962-04-07 | 1962-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-06 | 1966-04-07 | 1966-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-06 | 1970-04-07 | 1970-10-07 | $7700.00 | Window Closed / Lapsed |