Patent US3519280A successfully refreshed from Google Patents.
US3519280A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Piston bearing and sealing means
Assignee: Hydro Component Research & Dev
•
Filing: 1967-06-02
•
Granted: 1970-07-07
•
Expires: 1987-06-02
Abstract
No abstract record available.
Inventors
- 👤 Orville F Genz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:33
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/18; F16J15/20
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2284340A
Cited
DE1035425B
Cited
US2776481A
Cited
US3069178A
Cited
US3120394A
Cited
US3327681A
Cited
US3167323A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-07-06 | 1974-01-05 | 1974-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-07-06 | 1978-01-05 | 1978-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-07-06 | 1982-01-05 | 1982-07-07 | $7700.00 | Window Closed / Lapsed |