US2431025A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Split phase motor control
Assignee: Metals and Controls Corp
•
Filing: 1944-10-04
•
Granted: 1947-11-18
•
Expires: 1964-10-04
Abstract
No abstract record available.
Inventors
- 👤 Lewis W Buell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:43
CPC Classifications
H; H02; H02P; H02P1/00; H02P1/16; H02P1/42
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US384323A
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US1606164A
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US2081618A
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US1921127A
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US1938405A
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US2021199A
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US2235537A
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US2314239A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-11-17 | 1951-05-19 | 1951-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-11-17 | 1955-05-19 | 1955-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-11-17 | 1959-05-19 | 1959-11-18 | $7700.00 | Window Closed / Lapsed |