US3456559A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary device
Assignee: Reliance Electric and Engineering Co
•
Filing: 1967-07-21
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Granted: 1969-07-22
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Expires: 1987-07-21
Abstract
No abstract record available.
Inventors
- 👤 Robert T Eddy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 15:38
CPC Classifications
F; F04; F04C; F04C2/00; F04C2/08; F04C2/10; F04C2/103; F04C2240/00; F04C2240/50; F04C2240/52
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-07-21 | 1973-01-20 | 1973-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-21 | 1977-01-20 | 1977-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-21 | 1981-01-20 | 1981-07-22 | $7700.00 | Window Closed / Lapsed |