US2631265A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Motor speed controller
Assignee: White Sewing Machine Corp
•
Filing: 1948-10-12
•
Granted: 1953-03-10
•
Expires: 1968-10-12
Abstract
No abstract record available.
Inventors
- 👤 Nathaniel E Colegrove
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:27
CPC Classifications
H; H02; H02P; H02P25/00; H02P25/16; H02P25/18; H02P25/186
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US720729A
Cited
US892656A
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US1577618A
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US2113234A
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US2281711A
Cited
US2293996A
Cited
US2357285A
Cited
US2520492A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-03-09 | 1956-09-08 | 1957-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-09 | 1960-09-08 | 1961-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-09 | 1964-09-08 | 1965-03-10 | $7700.00 | Window Closed / Lapsed |