US3388928A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rail car coupler for tractors
Assignee: Caterpillar Inc
•
Filing: 1966-06-24
•
Granted: 1968-06-18
•
Expires: 1986-06-24
Abstract
No abstract record available.
Inventors
- 👤 John M Poker
- 👤 Gail G Barbee
- 👤 Dean M Lawrence
- 👤 Robert J Orland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 11:55
CPC Classifications
B; B61; B61J; B61J3/00; B61J3/12; B61G; B61G7/00; B61G7/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1012255A
Cited
US1607251A
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US2653031A
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US2721522A
Cited
US3155250A
Cited
US3118688A
Cited
US3198137A
Cited
US3245553A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-06-18 | 1971-12-18 | 1972-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-06-18 | 1975-12-18 | 1976-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-06-18 | 1979-12-18 | 1980-06-18 | $7700.00 | Window Closed / Lapsed |