US2481989A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Motor control
Assignee: Burnham Corp
•
Filing: 1946-11-01
•
Granted: 1949-09-13
•
Expires: 1966-11-01
Abstract
No abstract record available.
Inventors
- 👤 Eddison William Barton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:32
CPC Classifications
E; E05; E05F; E05F15/00; E05F15/60; E05F15/603; E05F15/611; E05F15/63; E05F15/40; E05F15/41
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1968388A
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US2059624A
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US2387533A
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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) | 1952-09-12 | 1953-03-14 | 1953-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-09-12 | 1957-03-14 | 1957-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-09-12 | 1961-03-14 | 1961-09-13 | $7700.00 | Window Closed / Lapsed |