US2704087A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic valve unit
Assignee: HALLER MACHINE AND Manufacturing Co
•
Filing: 1949-08-03
•
Granted: 1955-03-15
•
Expires: 1969-08-03
Abstract
No abstract record available.
Inventors
- 👤 Rolland S Lindsay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:37
CPC Classifications
F; F15; F15B; F15B11/00; F15B11/16; F15B11/20; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2559; Y10T137/265; Y10T137/2668; Y10T137/2693
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1823426A
Cited
US2096073A
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US2130618A
Cited
US2161642A
Cited
US2200824A
Cited
US2301028A
Cited
US2499235A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-03-14 | 1958-09-13 | 1959-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-03-14 | 1962-09-13 | 1963-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-03-14 | 1966-09-13 | 1967-03-15 | $7700.00 | Window Closed / Lapsed |