US3439248A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Trigger-actuated motor speed control and switching device having multiple selective positions for setting motor speeds
Assignee: Singer Co
•
Filing: 1966-01-04
•
Granted: 1969-04-15
•
Expires: 1986-01-04
Abstract
No abstract record available.
Inventors
- 👤 Don B Winchester
- 👤 William A Batson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:53
CPC Classifications
H; H01; H01H; H01H9/00; H01H9/02; H01H9/06; H01H9/061; H02; H02P; H02P7/00; H02P7/06; H02P7/18; H02P7/24; H02P7/28; H02P7/285; H02P7/292; H02P7/295
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3085169A
Cited
US3222583A
Cited
US3221192A
Cited
US3302088A
Cited
US3327196A
Cited
US3329842A
Cited
US3328613A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-04-14 | 1972-10-14 | 1973-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-14 | 1976-10-14 | 1977-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-14 | 1980-10-14 | 1981-04-15 | $7700.00 | Window Closed / Lapsed |