US3477315A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dynamoelectric device with speed change mechanism
Assignee: Individual
•
Filing: 1967-12-18
•
Granted: 1969-11-11
•
Expires: 1987-12-18
Abstract
No abstract record available.
Inventors
- 👤 Elmer Fred Macks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:33
CPC Classifications
F; F16; F16H; F16H13/00; F16H13/06; F16H13/08; H; H02; H02K; H02K7/00; H02K7/003; H02K7/08; H02K7/083; H02K7/10; H02K7/116
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2536803A
Cited
US2750160A
Cited
US3011364A
Cited
US3008061A
Cited
US3001420A
Cited
US3178963A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-11-10 | 1973-05-12 | 1973-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-10 | 1977-05-12 | 1977-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-10 | 1981-05-12 | 1981-11-11 | $7700.00 | Window Closed / Lapsed |