US2642681A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Front apron adjusting mechanism for carry-type scrapers
Assignee: Individual
•
Filing: 1948-07-14
•
Granted: 1953-06-23
•
Expires: 1968-07-14
Abstract
No abstract record available.
Inventors
- 👤 Harold A Wagner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:11
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/64; E02F3/65; E02F3/654; E02F3/657; E02F3/6409; E02F3/6436; E02F3/656
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2320625A
Cited
US2304786A
Cited
US2275601A
Cited
US2317511A
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US2303650A
Cited
US2422813A
Cited
US2516816A
Cited
US2460764A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-22 | 1956-12-22 | 1957-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-22 | 1960-12-22 | 1961-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-22 | 1964-12-22 | 1965-06-23 | $7700.00 | Window Closed / Lapsed |