Patent US3466996A successfully refreshed from Google Patents.
US3466996A
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Apparatus for preventing premature flashing in a processing system
Assignee: Hexion Inc
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Filing: 1967-09-19
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Granted: 1969-09-16
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Expires: 1987-09-19
Abstract
No abstract record available.
Inventors
- 👤 William Albert Sommer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:04
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/12; F16K31/18; F16K31/20; F16K31/24; F16K31/26; A; A23; A23B; A23B11/00; A23B11/10; A23B11/12; A23B11/13; A23B11/133; A23B11/137; A23B2/00; A23B2/40; A23B2/42; A23B2/46
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2019491A
Cited
US2182335A
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US2314455A
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US2815289A
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US2902048A
Cited
US3156176A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-15 | 1973-03-17 | 1973-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-15 | 1977-03-17 | 1977-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-15 | 1981-03-17 | 1981-09-16 | $7700.00 | Window Closed / Lapsed |