US3433131A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control systems for hydraulic power units
Assignee: Individual
•
Filing: 1967-08-22
•
Granted: 1969-03-18
•
Expires: 1987-08-22
Abstract
No abstract record available.
Inventors
- 👤 Ingebret Soyland
- 👤 Kristian Soyland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:00
CPC Classifications
F; F15; F15B; F15B11/00; F15B11/08; F15B2211/00; F15B2211/30; F15B2211/305; F15B2211/30505; F15B2211/30525; F15B2211/40; F15B2211/45; F15B2211/50; F15B2211/505; F15B2211/50509; F15B2211/50518
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-03-17 | 1972-09-16 | 1973-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-17 | 1976-09-16 | 1977-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-17 | 1980-09-16 | 1981-03-18 | $7700.00 | Window Closed / Lapsed |