US3411475A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure indicator for lubrication systems
Assignee: Farr Co
•
Filing: 1965-12-08
•
Granted: 1968-11-19
•
Expires: 1985-12-08
Abstract
No abstract record available.
Inventors
- 👤 Sander D Sheff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:39
CPC Classifications
F; F16; F16N; F16N29/00; F16N29/04; B; B01; B01D; B01D35/00; B01D35/14; B01D35/143; F01; F01M; F01M1/00; F01M1/18; F01M1/20; G; G01; G01L; G01L19/00; G01L19/08; G01L19/12
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) | 1971-11-19 | 1972-05-20 | 1972-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-19 | 1976-05-20 | 1976-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-19 | 1980-05-20 | 1980-11-19 | $7700.00 | Window Closed / Lapsed |