US2819935A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Seal for very high pressures
Assignee: Oilgear Co
•
Filing: 1954-09-07
•
Granted: 1958-01-14
•
Expires: 1974-09-07
Abstract
No abstract record available.
Inventors
- 👤 Adolf R Grad
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:24
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/02; F16J15/021; F15; F15B; F15B3/00
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2168631A
Cited
US2195547A
Cited
US2436407A
Cited
US2472620A
Cited
US2516743A
Cited
US2517290A
Cited
US2595592A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-01-13 | 1961-07-15 | 1962-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-13 | 1965-07-15 | 1966-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-13 | 1969-07-15 | 1970-01-14 | $7700.00 | Window Closed / Lapsed |