US3399632A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Railway car diaphragm and buffer structure
Assignee: ThyssenKrupp Budd Co
•
Filing: 1966-06-24
•
Granted: 1968-09-03
•
Expires: 1986-06-24
Abstract
No abstract record available.
Inventors
- 👤 Albert G Dean
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 03:15
CPC Classifications
B; B61; B61D; B61D17/00; B61D17/04; B61D17/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US455427A
Cited
US497145A
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US506421A
Cited
FR709709A
Cited
US1943370A
Cited
US2128221A
Cited
US2095003A
Cited
US2578140A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-09-03 | 1972-03-04 | 1972-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-09-03 | 1976-03-04 | 1976-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-09-03 | 1980-03-04 | 1980-09-03 | $7700.00 | Window Closed / Lapsed |