US2889943A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means for evacuating cars of the hopper type
Assignee: Individual
•
Filing: 1956-04-12
•
Granted: 1959-06-09
•
Expires: 1976-04-12
Abstract
No abstract record available.
Inventors
- 👤 Plant Pattie Louise Moore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:19
CPC Classifications
B; B61; B61D; B61D7/00; B61D7/14; B61D7/16; B61D7/24; B61D7/30; B61D7/32
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2013235A
Cited
US1970740A
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US2342440A
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US2573164A
Cited
US2507749A
Cited
US2624479A
Cited
US2626720A
Cited
US2621813A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-06-08 | 1962-12-08 | 1963-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-06-08 | 1966-12-08 | 1967-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-06-08 | 1970-12-08 | 1971-06-09 | $7700.00 | Window Closed / Lapsed |