US2486254A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control mechanism for electrically driven tools
Assignee: Excel Auto Radiator Co
•
Filing: 1944-11-10
•
Granted: 1949-10-25
•
Expires: 1964-11-10
Abstract
No abstract record available.
Inventors
- 👤 Theodore S Briskin
- 👤 Joseph C Zivny
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:28
CPC Classifications
B; B23; B23B; B23B45/00; B23B45/008; H; H02; H02K; H02K7/00; H02K7/14; H02K7/145; Y; Y10; Y10T; Y10T408/00; Y10T408/65; Y10T74/00; Y10T74/18; Y10T74/18888; Y10T74/1892; Y10T74/18928; Y10T74/19; Y10T74/19219; Y10T74/19251; Y10T74/19279; Y10T74/20; Y10T74/20207; Y10T74/20238
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1325234A
Cited
US1527247A
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US1563546A
Cited
US1581927A
Cited
US1580499A
Cited
US1611042A
Cited
US1754179A
Cited
US1917507A
Cited
US2351485A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-10-24 | 1953-04-25 | 1953-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-10-24 | 1957-04-25 | 1957-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-10-24 | 1961-04-25 | 1961-10-25 | $7700.00 | Window Closed / Lapsed |