Patent JPS59822A successfully refreshed from Google Patents.
Patent US4774159A successfully refreshed from Google Patents.
Patent US3937010A successfully refreshed from Google Patents.
Patent US3805477A successfully refreshed from Google Patents.
Patent US3068831A successfully refreshed from Google Patents.
US3068831A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure operated visual warning devices
Assignee: Federal Mogul Sealing Systems Slough Ltd
•
Filing: 1961-03-06
•
Granted: 1962-12-18
•
Expires: 1981-03-06
Abstract
No abstract record available.
Inventors
- 👤 Witchell Stanley Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:56
CPC Classifications
F; F02; F02M; F02M35/00; F02M35/02; F02M35/08; F02M35/09; F01; F01L; F01L1/00; F01L2710/00; F01L2710/006; Y; Y10; Y10S; Y10S116/00; Y10S116/42
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2225675A
Cited
US2948151A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-12-17 | 1966-06-18 | 1966-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-17 | 1970-06-18 | 1970-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-17 | 1974-06-18 | 1974-12-18 | $7700.00 | Window Closed / Lapsed |