Patent US2805038A successfully refreshed from Google Patents.
US2805038A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure actuated bye-pass valves
Assignee: Electraulic Presses Ltd
•
Filing: 1952-12-04
•
Granted: 1957-09-03
•
Expires: 1972-12-04
Abstract
No abstract record available.
Inventors
- 👤 Towler Frank Hathorn
- 👤 Towler John Maurice
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:13
CPC Classifications
F; F15; F15B; F15B13/00; F15B13/02; F16; F16K; F16K31/00; F16K31/12; F16K31/36; F16K31/38; F16K31/383; F16K31/3835
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US624890A
Cited
US931228A
Cited
US1071777A
Cited
US2496553A
Cited
US2426065A
Cited
US2526646A
Cited
US2664102A
Cited
US2612838A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-09-02 | 1961-03-04 | 1961-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-02 | 1965-03-04 | 1965-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-02 | 1969-03-04 | 1969-09-03 | $7700.00 | Window Closed / Lapsed |