Patent US2861234A successfully refreshed from Google Patents.
US2861234A
Expired / Lapsed
US
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Servo controlled follower system
Assignee: Motors Liquidation Co
•
Filing: 1954-03-15
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Granted: 1958-11-18
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Expires: 1974-03-15
Abstract
No abstract record available.
Inventors
- 👤 Edward J Martin
- 👤 Frederick W Chapman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:57
CPC Classifications
G; G05; G05D; G05D3/00; G05D3/12; G05D3/14; G05D3/18; B; B23; B23Q; B23Q35/00; B23Q35/04; B23Q35/08; B23Q35/12; B23Q35/121; B23Q35/123; Y; Y10; Y10T; Y10T409/00; Y10T409/30; Y10T409/30084; Y10T409/303416; Y10T409/303472
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1822841A
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US1831787A
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US1989546A
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US2007751A
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US2492731A
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US2559575A
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US2690373A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-11-17 | 1962-05-19 | 1962-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-17 | 1966-05-19 | 1966-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-17 | 1970-05-19 | 1970-11-18 | $7700.00 | Window Closed / Lapsed |