US2678745A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-dumping elevator
Assignee: Individual
•
Filing: 1951-10-04
•
Granted: 1954-05-18
•
Expires: 1971-10-04
Abstract
No abstract record available.
Inventors
- 👤 Simonsen Arnold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 16:07
CPC Classifications
B; B66; B66B; B66B11/00; B66B11/02; B65; B65G; B65G47/00; B65G47/52; B65G47/60; B65G47/61; B66B17/00; B66B17/14; B66B17/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US809456A
Cited
US888434A
Cited
GB238076A
Cited
FR590159A
Cited
DE450828C
Cited
US1776414A
Cited
US2011656A
Cited
US2121121A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-05-17 | 1957-11-16 | 1958-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-17 | 1961-11-16 | 1962-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-17 | 1965-11-16 | 1966-05-18 | $7700.00 | Window Closed / Lapsed |