US2587092A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-loading excavator
Assignee: Individual
•
Filing: 1949-11-10
•
Granted: 1952-02-26
•
Expires: 1969-11-10
Abstract
No abstract record available.
Inventors
- 👤 Bartsch Cornelius
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 03:24
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/64; E02F3/65; E02F3/654; E02F3/655; E02F3/6454; E02F3/6472
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US47566A
Cited
US2371154A
Cited
US645443A
Cited
FR527621A
Cited
US1515506A
Cited
US2063698A
Cited
US2084887A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-02-25 | 1955-08-27 | 1956-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-02-25 | 1959-08-27 | 1960-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-02-25 | 1963-08-27 | 1964-02-26 | $7700.00 | Window Closed / Lapsed |