US2591556A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic vehicle unloader
Assignee: Individual
•
Filing: 1949-03-25
•
Granted: 1952-04-01
•
Expires: 1969-03-25
Abstract
No abstract record available.
Inventors
- 👤 Knutson Reuben
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:10
CPC Classifications
B; B60; B60P; B60P1/00; B60P1/36
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US507122A
Cited
US1375535A
Cited
US2290460A
Cited
US2275799A
Cited
US2345328A
Cited
US2355226A
Cited
US2475590A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-04-01 | 1955-10-01 | 1956-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-01 | 1959-10-01 | 1960-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-01 | 1963-10-01 | 1964-04-01 | $7700.00 | Window Closed / Lapsed |