Patent US4207453A successfully refreshed from Google Patents.
Patent US2799523A successfully refreshed from Google Patents.
US2799523A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure-actuated seals
Assignee: Linear Inc
•
Filing: 1954-05-06
•
Granted: 1957-07-16
•
Expires: 1974-05-06
Abstract
No abstract record available.
Inventors
- 👤 Elliot J Parker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:20
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/46; F16J15/48; B; B64; B64D; B64D37/00; B64D37/005
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) | 1960-07-15 | 1961-01-14 | 1961-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-15 | 1965-01-14 | 1965-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-15 | 1969-01-14 | 1969-07-16 | $7700.00 | Window Closed / Lapsed |