Patent US3021464A successfully refreshed from Google Patents.
US3021464A
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Tool depth control system
Assignee: International Business Machines Corp
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Filing: 1958-03-27
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Granted: 1962-02-13
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Expires: 1978-03-27
Abstract
No abstract record available.
Inventors
- 👤 George O Philip
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:09
CPC Classifications
G; G05; G05B; G05B19/00; G05B19/02; G05B19/18; G05B19/19; G05B19/21; G05B19/23; G05B2219/00; G05B2219/30; G05B2219/49; G05B2219/49237; Y; Y10; Y10T; Y10T408/00; Y10T408/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2479293A
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US2425484A
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US2820187A
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US2747154A
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US2848670A
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US2832023A
Cited
US2838963A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-02-12 | 1965-08-14 | 1966-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-12 | 1969-08-14 | 1970-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-12 | 1973-08-14 | 1974-02-13 | $7700.00 | Window Closed / Lapsed |