Patent US2580353A successfully refreshed from Google Patents.
US2580353A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid pressure intensifier
Assignee: C B Hunt & Son Inc
•
Filing: 1947-11-08
•
Granted: 1951-12-25
•
Expires: 1967-11-08
Abstract
No abstract record available.
Inventors
- 👤 Hunt Nathan Charles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:24
CPC Classifications
F; F15; F15B; F15B3/00
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US715598A
Cited
US777008A
Cited
FR26933E
Cited
US1865561A
Cited
US2058377A
Cited
US2075235A
Cited
US2032185A
Cited
US2126490A
Cited
US2231680A
Cited
US2289043A
Cited
US2334841A
Cited
US2324149A
Cited
US2349846A
Cited
US2403912A
Cited
US2446657A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-12-24 | 1955-06-25 | 1955-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-24 | 1959-06-25 | 1959-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-24 | 1963-06-25 | 1963-12-25 | $7700.00 | Window Closed / Lapsed |