US2835204A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary liquid displacement device
Assignee: Liquid Controls Corp
•
Filing: 1953-11-12
•
Granted: 1958-05-20
•
Expires: 1973-11-12
Abstract
No abstract record available.
Inventors
- 👤 George B Richards
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:06
CPC Classifications
F; F04; F04C; F04C2/00; F04C2/30; F04C2/36; G; G01; G01F; G01F3/00; G01F3/02; G01F3/04; G01F3/06; G01F3/10
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) | 1961-05-19 | 1961-11-18 | 1962-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-19 | 1965-11-18 | 1966-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-19 | 1969-11-18 | 1970-05-20 | $7700.00 | Window Closed / Lapsed |