US2690130A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Centrifugal pump unit
Assignee: HYDROJET Corp
•
Filing: 1949-11-19
•
Granted: 1954-09-28
•
Expires: 1969-11-19
Abstract
No abstract record available.
Inventors
- 👤 Boeckeler Benjamin Clark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:55
CPC Classifications
F; F04; F04D; F04D9/00; F04D9/001; F04D1/00; F04D1/12
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1591388A
Cited
US1981965A
Cited
US2166530A
Cited
US2134686A
Cited
US2153360A
Cited
US2178994A
Cited
US2260600A
Cited
US2368528A
Cited
US2295024A
Cited
US2461865A
Cited
US2444100A
Cited
US2440912A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-09-27 | 1958-03-29 | 1958-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-09-27 | 1962-03-29 | 1962-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-09-27 | 1966-03-29 | 1966-09-28 | $7700.00 | Window Closed / Lapsed |