Patent US3381584A successfully refreshed from Google Patents.
US3381584A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vane type rotary devices
Assignee: Abegg and Reinhold Co
•
Filing: 1965-05-07
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Granted: 1968-05-07
•
Expires: 1985-05-07
Abstract
No abstract record available.
Inventors
- 👤 Bartos Josef
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:10
CPC Classifications
E; E21; E21B; E21B19/00; E21B19/16; Y; Y10; Y10T; Y10T403/00; Y10T403/70; Y10T403/7047; Y10T403/7051; Y10T403/7052; Y10T403/7056
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-05-07 | 1971-11-06 | 1972-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-07 | 1975-11-06 | 1976-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-07 | 1979-11-06 | 1980-05-07 | $7700.00 | Window Closed / Lapsed |