Patent US6419696B1 successfully refreshed from Google Patents.
US3483892A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic control unit
Assignee: Individual
•
Filing: 1968-01-30
•
Granted: 1969-12-16
•
Expires: 1988-01-30
Abstract
No abstract record available.
Inventors
- 👤 Kazuo Sugimura
- 👤 Nobuyuki Sugimura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:36
CPC Classifications
F; F15; F15B; F15B11/00; F15B11/16; F15B11/22; B; B66; B66F; B66F3/00; B66F3/46; F15B13/00; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2514; Y10T137/2521; Y10T137/8593; Y10T137/87265; Y10T137/8741; Y10T137/87426
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1999834A
Cited
US2331291A
Cited
US2643664A
Cited
US2684692A
Cited
US2782603A
Cited
US2886281A
Cited
US2988103A
Cited
GB890525A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-15 | 1973-06-16 | 1973-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-15 | 1977-06-16 | 1977-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-15 | 1981-06-16 | 1981-12-16 | $7700.00 | Window Closed / Lapsed |