US2738236A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Track construction
Assignee: Individual
•
Filing: 1951-07-23
•
Granted: 1956-03-13
•
Expires: 1971-07-23
Abstract
No abstract record available.
Inventors
- 👤 Fred L Haushalter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:57
CPC Classifications
B; B62; B62D; B62D55/00; B62D55/08; B62D55/18; B62D55/20; B62D55/205; B62D55/21; B62D55/211
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1973214A
Cited
US2129696A
Cited
GB537995A
Cited
US2375170A
Cited
US2389438A
Cited
US2409502A
Cited
US2430573A
Cited
US2422483A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-03-13 | 1959-09-12 | 1960-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-03-13 | 1963-09-12 | 1964-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-03-13 | 1967-09-12 | 1968-03-13 | $7700.00 | Window Closed / Lapsed |