Patent US3017807A successfully refreshed from Google Patents.
US3017807A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary piston charger-brake mechanism
Assignee: Individual
•
Filing: 1960-06-24
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Granted: 1962-01-23
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Expires: 1980-06-24
Abstract
No abstract record available.
Inventors
- 👤 Donald P Grover
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:19
CPC Classifications
F; F15; F15B; F15B15/00; F15B15/20; F15B15/26; F15B15/262; F15B15/08; F15B15/12; F41; F41A; F41A7/00; F41A7/02; F41A7/04; F41F; F41F1/00; F41F1/08; F41F1/10
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) | 1965-01-22 | 1965-07-24 | 1966-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-01-22 | 1969-07-24 | 1970-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-01-22 | 1973-07-24 | 1974-01-23 | $7700.00 | Window Closed / Lapsed |