US2621603A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary pump
Assignee: Individual
•
Filing: 1948-08-31
•
Granted: 1952-12-16
•
Expires: 1968-08-31
Abstract
No abstract record available.
Inventors
- 👤 Julian B Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:20
CPC Classifications
F; F04; F04C; F04C2/00; F04C2/08; F04C2/10; F04C2/101; F04C2/082; F04C2/084; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49316; Y10T29/4932; Y10T74/00; Y10T74/19; Y10T74/19642; Y10T74/19647
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
DE397436C
Cited
US1341846A
Cited
US1501051A
Cited
GB238620A
Cited
GB270000A
Cited
GB284411A
Cited
US1787543A
Cited
GB340111A
Cited
US1994397A
Cited
US2126200A
Cited
US2445967A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-12-16 | 1956-06-16 | 1956-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-16 | 1960-06-16 | 1960-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-16 | 1964-06-16 | 1964-12-16 | $7700.00 | Window Closed / Lapsed |