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US3231801A
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Plural motor master-slave control system employing pulse responsive electronic transmission
Assignee: National Standard Co
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Filing: 1964-09-02
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Granted: 1966-01-25
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Expires: 1984-09-02
Abstract
No abstract record available.
Inventors
- 👤 Ernest U Lang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:20
CPC Classifications
B; B21; B21F; B21F3/00; H; H02; H02P; H02P5/00; H02P5/46; H02P5/50; H02P5/51
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2523503A
Cited
US2943251A
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US3064173A
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US2945997A
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US3036223A
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US3015806A
Cited
US3184663A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-24 | 1969-07-26 | 1970-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-24 | 1973-07-26 | 1974-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-24 | 1977-07-26 | 1978-01-25 | $7700.00 | Window Closed / Lapsed |