US3422855A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High temperature fluid conduit
Assignee: Dow Silicones Corp
•
Filing: 1965-11-17
•
Granted: 1969-01-21
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Expires: 1985-11-17
Abstract
No abstract record available.
Inventors
- 👤 Donald E Weyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:18
CPC Classifications
F; F01; F01N; F01N13/00; F01N13/16; F16; F16L; F16L59/00; F16L59/14; F16L9/00; F16L9/12; F16L9/121
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2990855A
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FR1249759A
Cited
US3090691A
Cited
US3233699A
Cited
US3206867A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-21 | 1972-07-22 | 1973-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-21 | 1976-07-22 | 1977-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-21 | 1980-07-22 | 1981-01-21 | $7700.00 | Window Closed / Lapsed |