US2968501A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid seal
Assignee: A P D CO
•
Filing: 1957-04-18
•
Granted: 1961-01-17
•
Expires: 1977-04-18
Abstract
No abstract record available.
Inventors
- 👤 Richard E Tisch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:26
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/32; Y; Y10; Y10S; Y10S277/00; Y10S277/935; Y10S277/944; Y10S277/945; Y10S277/946; Y10S285/00; Y10S285/918
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2360731A
Cited
US2521248A
Cited
US2728620A
Cited
US2783068A
Cited
US2760794A
Cited
US2784013A
Cited
US2873132A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-01-17 | 1964-07-18 | 1965-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-17 | 1968-07-18 | 1969-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-17 | 1972-07-18 | 1973-01-17 | $7700.00 | Window Closed / Lapsed |