US2865117A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Earth scraper with retractable scarifier
Assignee: EARTHCAVATOR CO Inc
•
Filing: 1956-02-10
•
Granted: 1958-12-23
•
Expires: 1976-02-10
Abstract
No abstract record available.
Inventors
- 👤 Morris C Davis
- 👤 Roy C Gannon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 02:46
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/46; E02F3/58; E02F3/60; E02F3/76; E02F3/80; E02F3/815; E02F3/8155
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB190328642A
Cited
US1428319A
Cited
US1929799A
Cited
US2578131A
Cited
US2674818A
Cited
US2698492A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-12-22 | 1962-06-23 | 1962-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-22 | 1966-06-23 | 1966-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-22 | 1970-06-23 | 1970-12-23 | $7700.00 | Window Closed / Lapsed |