US2387629A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary vane pump
Assignee: Individual
•
Filing: 1942-12-30
•
Granted: 1945-10-23
•
Expires: 1962-12-30
Abstract
No abstract record available.
Inventors
- 👤 Waseige Charles Raymond
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:08
CPC Classifications
F; F04; F04C; F04C15/00; F04C29/00; F04C29/02; F04C29/023; F04C29/0042; F04C29/005; F04C18/00; F04C18/30; F04C18/34; F04C18/344; F04C18/352; F04C2240/00; F04C2240/60
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1948-10-22 | 1949-04-23 | 1949-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1952-10-22 | 1953-04-23 | 1953-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1956-10-22 | 1957-04-23 | 1957-10-23 | $7700.00 | Window Closed / Lapsed |