Patent US3475997A successfully refreshed from Google Patents.
US3475997A
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US
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Method and apparatus for controlling motions of a drilling cutter or the like
Assignee: Giddings and Lewis LLC
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Filing: 1967-03-10
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Granted: 1969-11-04
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Expires: 1987-03-10
Abstract
No abstract record available.
Inventors
- 👤 Jack A Wohlfeil
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:02
CPC Classifications
G; G05; G05B; G05B19/00; G05B19/02; G05B19/18; G05B19/19; G05B19/21; G05B19/23; G05B19/416; G05B19/4166; G05B2219/00; G05B2219/30; G05B2219/37; G05B2219/37405; G05B2219/43; G05B2219/43152; G05B2219/45; G05B2219/45129; G05B2219/49; G05B2219/49047; G05B2219/49237; G05B2219/50; G05B2219/50113; Y; Y10; Y10T; Y10T408/00; Y10T408/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3021464A
Cited
US3302492A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-11-03 | 1973-05-05 | 1973-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-03 | 1977-05-05 | 1977-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-03 | 1981-05-05 | 1981-11-04 | $7700.00 | Window Closed / Lapsed |