Patent US3546559A successfully refreshed from Google Patents.
US3546559A
Expired / Lapsed
US
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Digital fine and coarse control wherein the command and position feedback are compared in serial fashion
Assignee: Allen Bradley Co LLC
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Filing: 1968-05-02
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Granted: 1970-12-08
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Expires: 1988-05-02
Abstract
No abstract record available.
Inventors
- 👤 Marion Kosem
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:46
CPC Classifications
G; G05; G05B; G05B19/00; G05B19/02; G05B19/18; G05B19/19; G05B19/21; G05B19/25; G05B19/251; G05B2219/00; G05B2219/30; G05B2219/41; G05B2219/41462
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3372321A
Cited
US3323030A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-12-07 | 1974-06-08 | 1974-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-07 | 1978-06-08 | 1978-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-07 | 1982-06-08 | 1982-12-08 | $7700.00 | Window Closed / Lapsed |