US2435425A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic control device
Assignee: General Controls Co
•
Filing: 1943-04-13
•
Granted: 1948-02-03
•
Expires: 1963-04-13
Abstract
No abstract record available.
Inventors
- 👤 Lewis L Cunningham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:41
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/02; F16K31/06; F16K31/08; F16K31/082
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1271670A
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US1203825A
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US1734257A
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US1978737A
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US2181423A
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US2235104A
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US2279076A
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US2363021A
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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) | 1951-02-02 | 1951-08-04 | 1952-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-02-02 | 1955-08-04 | 1956-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-02-02 | 1959-08-04 | 1960-02-03 | $7700.00 | Window Closed / Lapsed |