US3535877A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Three-pump hydraulic system incorporating an unloader
Assignee: SPX Technologies Inc
•
Filing: 1969-05-09
•
Granted: 1970-10-27
•
Expires: 1989-05-09
Abstract
No abstract record available.
Inventors
- 👤 Lanson Becker
- 👤 Robert W Rue
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:54
CPC Classifications
E; E02; E02F; E02F9/00; E02F9/20; E02F9/22; E02F9/2278; E02F9/2292; E02F9/2221; E02F9/2239; F; F15; F15B; F15B11/00; F15B11/16; F15B11/17; F15B2211/00; F15B2211/20; F15B2211/205; F15B2211/2053; F15B2211/20538; F15B2211/20576; F15B2211/30; F15B2211/305; F15B2211/30505; F15B2211/40; F15B2211/405; F15B2211/40515; F15B2211/45; F15B2211/50; F15B2211/505; F15B2211/50509; F15B2211/50536; F15B2211/60; F15B2211/65; F15B2211/70; F15B2211/71; F15B2211/7142; F15B2211/78; F15B2211/781
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1973-10-26 | 1974-04-27 | 1974-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-26 | 1978-04-27 | 1978-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-26 | 1982-04-27 | 1982-10-27 | $7700.00 | Window Closed / Lapsed |