Patent US3502186A successfully refreshed from Google Patents.
US3502186A
Expired / Lapsed
US
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Oil-mist feed and level sight assembly
Assignee: Stewart Warner Corp
•
Filing: 1968-06-14
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Granted: 1970-03-24
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Expires: 1988-06-14
Abstract
No abstract record available.
Inventors
- 👤 Frederick M Hewitt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:02
CPC Classifications
F; F16; F16N; F16N19/00; F16N19/003; F16N7/00; F16N7/30; F16N7/32; F16N7/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US635210A
Cited
US1071894A
Cited
US1350643A
Cited
US1424974A
Cited
US1603172A
Cited
US1705845A
Cited
US1923857A
Cited
US1972962A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-03-23 | 1973-09-22 | 1974-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-23 | 1977-09-22 | 1978-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-23 | 1981-09-22 | 1982-03-24 | $7700.00 | Window Closed / Lapsed |