US3066618A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sliding closure operating mechanism for hopper outlet
Assignee: Enterprise Railway Equipment Co
•
Filing: 1959-08-07
•
Granted: 1962-12-04
•
Expires: 1979-08-07
Abstract
No abstract record available.
Inventors
- 👤 Richard N Gunnison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:57
CPC Classifications
B; B65; B65D; B65D90/00; B65D90/54; B65D90/58; B65D90/587
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US280621A
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US1347375A
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US1484764A
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US2791973A
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US2753815A
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US2989931A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-12-03 | 1966-06-04 | 1966-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-03 | 1970-06-04 | 1970-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-03 | 1974-06-04 | 1974-12-04 | $7700.00 | Window Closed / Lapsed |