US2418231A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Booster pump and tank assembly
Assignee: CURTIS PUMP CO
•
Filing: 1944-01-24
•
Granted: 1947-04-01
•
Expires: 1964-01-24
Abstract
No abstract record available.
Inventors
- 👤 Ewald J Kimm
- 👤 Bernard R Bellmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:10
CPC Classifications
F; F04; F04D; F04D13/00; F04D13/16
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
DE378906C
Cited
US1857004A
Cited
FR639524A
Cited
US1734507A
Cited
US2178994A
Cited
US2300332A
Cited
US2325931A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-03-31 | 1950-09-30 | 1951-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-03-31 | 1954-09-30 | 1955-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-03-31 | 1958-09-30 | 1959-04-01 | $7700.00 | Window Closed / Lapsed |