US2954968A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid barrier
Assignee: Pangborn Corp
•
Filing: 1956-10-11
•
Granted: 1960-10-04
•
Expires: 1976-10-11
Abstract
No abstract record available.
Inventors
- 👤 Walter O Vedder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:32
CPC Classifications
F; F24; F24F; F24F9/00; F27; F27D; F27D17/00; F27D17/30; F27D17/304
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1194373A
Cited
GB190810835A
Cited
US1036499A
Cited
US1024999A
Cited
US1921763A
Cited
US1911394A
Cited
FR735319A
Cited
US2269645A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-10-04 | 1964-04-04 | 1964-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-10-04 | 1968-04-04 | 1968-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-10-04 | 1972-04-04 | 1972-10-04 | $7700.00 | Window Closed / Lapsed |