US2738200A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Two wheeled agricultural trailer for supporting workers
Assignee: FENG Inc
•
Filing: 1951-10-06
•
Granted: 1956-03-13
•
Expires: 1971-10-06
Abstract
No abstract record available.
Inventors
- 👤 Haven La Vern H De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:33
CPC Classifications
B; B62; B62D; B62D63/00; B62D63/06; B62D63/062; A; A01; A01B; A01B75/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US224390A
Cited
US536309A
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US783496A
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US1370347A
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US1687948A
Cited
AU1270733A
Cited
US2302246A
Cited
US2277302A
Cited
US2317606A
Cited
US2503314A
Cited
US2460466A
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 |