US3481431A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubrication system
Assignee: MASON H DORSEY
•
Filing: 1966-08-18
•
Granted: 1969-12-02
•
Expires: 1986-08-18
Abstract
No abstract record available.
Inventors
- 👤 Mason H Dorsey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 03:34
CPC Classifications
D; D04; D04B; D04B35/00; D04B35/28; F; F16; F16N; F16N7/00; F16N7/30; F16N7/32
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1934791A
Cited
GB431183A
Cited
US2667236A
Cited
US2857019A
Cited
US2725734A
Cited
US2954146A
Cited
CH342255A
Cited
US3013633A
Cited
US3145803A
Cited
US3253678A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-01 | 1973-06-02 | 1973-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-01 | 1977-06-02 | 1977-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-01 | 1981-06-02 | 1981-12-02 | $7700.00 | Window Closed / Lapsed |