US3424352A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for discharge and cleanout of pulverulent material from tank cars
Assignee: Union Tank Car Co
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Filing: 1967-06-08
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Granted: 1969-01-28
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Expires: 1987-06-08
Abstract
No abstract record available.
Inventors
- 👤 Laurence J Schlink
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 07:59
CPC Classifications
B; B61; B61D; B61D5/00; B61D5/002; B61D5/004; F; F16; F16K; F16K15/00; F16K15/14; F16K15/141; F16K15/142
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) | 1972-01-28 | 1972-07-29 | 1973-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-28 | 1976-07-29 | 1977-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-28 | 1980-07-29 | 1981-01-28 | $7700.00 | Window Closed / Lapsed |