US3503530A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transfer cart for transferring an article handling vehicle between aisles of a warehouse
Assignee: Doosan Bobcat North America Inc
•
Filing: 1966-04-18
•
Granted: 1970-03-31
•
Expires: 1986-04-18
Abstract
No abstract record available.
Inventors
- 👤 Arthur R Burch
- 👤 Charles E Bates
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:16
CPC Classifications
B; B65; B65G; B65G1/00; B65G1/02; B65G1/04; B65G1/0407; B65G1/0428
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1919269A
Cited
US2670859A
Cited
US2923421A
Cited
US3049247A
Cited
US3206041A
Cited
GB967451A
Cited
AT230283B
Cited
US3279626A
Cited
US3219207A
Cited
US3294260A
Cited
US3323661A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-03-30 | 1973-09-29 | 1974-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-30 | 1977-09-29 | 1978-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-30 | 1981-09-29 | 1982-03-31 | $7700.00 | Window Closed / Lapsed |