US3452994A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mechanical face seal
Assignee: Echlin Inc
•
Filing: 1966-08-01
•
Granted: 1969-07-01
•
Expires: 1986-08-01
Abstract
No abstract record available.
Inventors
- 👤 Emeric J Gyory
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 14:41
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/34; F16J15/3436; F16J15/344; F16J15/36; Y; Y10; Y10S; Y10S277/00; Y10S277/915
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2341900A
Cited
US2373443A
Cited
US2395095A
Cited
US2598886A
Cited
US3244425A
Cited
US3160417A
Cited
US3279804A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-30 | 1972-12-30 | 1973-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-30 | 1976-12-30 | 1977-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-30 | 1980-12-30 | 1981-07-01 | $7700.00 | Window Closed / Lapsed |