Patent US2582556A successfully refreshed from Google Patents.
US2582556A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrohydraulic valve operating mechanism
Assignee: ECONOMY PUMPS Inc
•
Filing: 1945-04-14
•
Granted: 1952-01-15
•
Expires: 1965-04-14
Abstract
No abstract record available.
Inventors
- 👤 Morey Carl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:13
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/12; F16K31/16; F16K31/163; F16K31/1635; Y; Y10; Y10T; Y10T137/00; Y10T137/8158; Y10T137/8225
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US462762A
Cited
US468334A
Cited
US630278A
Cited
US1264282A
Cited
GB172084A
Cited
US1616841A
Cited
US1994336A
Cited
US1886518A
Cited
US2028696A
Cited
US2092019A
Cited
US2232428A
Cited
US2268135A
Cited
US2389473A
Cited
US2307544A
Cited
US2396993A
Cited
US2352140A
Cited
US2387215A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-01-14 | 1955-07-16 | 1956-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-01-14 | 1959-07-16 | 1960-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-01-14 | 1963-07-16 | 1964-01-15 | $7700.00 | Window Closed / Lapsed |