Patent US3474920A successfully refreshed from Google Patents.
US3474920A
Expired / Lapsed
US
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Operating mechanism for a vehicle discharge means
Assignee: Pullman Standard Inc
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Filing: 1966-12-12
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Granted: 1969-10-28
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Expires: 1986-12-12
Abstract
No abstract record available.
Inventors
- 👤 Roy W Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:21
CPC Classifications
B; B61; B61D; B61D7/00; B61D7/14; B61D7/16; B61D7/24; B61D7/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US726541A
Cited
GB190705251A
Cited
US1266630A
Cited
GB192964A
Cited
US1594863A
Cited
FR711444A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-27 | 1973-04-28 | 1973-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-27 | 1977-04-28 | 1977-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-27 | 1981-04-28 | 1981-10-28 | $7700.00 | Window Closed / Lapsed |