Patent US3006408A successfully refreshed from Google Patents.
US3006408A
Expired / Lapsed
US
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Flashback retarder arrangement for fired equipment
Assignee: Union Tank Car Co
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Filing: 1958-07-31
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Granted: 1961-10-31
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Expires: 1978-07-31
Abstract
No abstract record available.
Inventors
- 👤 Shepherd Roy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:36
CPC Classifications
F; F23; F23M; F23M11/00; F23M11/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-10-30 | 1965-05-01 | 1965-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-10-30 | 1969-05-01 | 1969-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-10-30 | 1973-05-01 | 1973-10-31 | $7700.00 | Window Closed / Lapsed |