US3387435A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety valve filter
Assignee: International Motors LLC
•
Filing: 1966-10-21
•
Granted: 1968-06-11
•
Expires: 1986-10-21
Abstract
No abstract record available.
Inventors
- 👤 Charles Broad Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:30
CPC Classifications
F; F02; F02M; F02M35/00; F02M35/02; F02M35/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US37500A
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US310157A
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US1070449A
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US3123456A
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US1398685A
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US1888150A
Cited
US2087688A
Cited
US2655041A
Cited
US2980203A
Cited
US3102014A
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US3298149A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-06-11 | 1971-12-11 | 1972-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-06-11 | 1975-12-11 | 1976-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-06-11 | 1979-12-11 | 1980-06-11 | $7700.00 | Window Closed / Lapsed |