US3065557A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power excavating device
Assignee: ALBRITTON ENGINEERING Corp
•
Filing: 1960-07-01
•
Granted: 1962-11-27
•
Expires: 1980-07-01
Abstract
No abstract record available.
Inventors
- 👤 Charles W Pewthers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:38
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/28; E02F3/36; E02F3/40; E02F3/402; E02F3/405; Y; Y10; Y10S; Y10S37/00; Y10S37/902; Y10S37/904
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1041569A
Cited
US2191608A
Cited
US2228445A
Cited
FR894880A
Cited
US2408484A
Cited
DE922519C
Cited
US2905168A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-11-26 | 1966-05-28 | 1966-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-11-26 | 1970-05-28 | 1970-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-11-26 | 1974-05-28 | 1974-11-27 | $7700.00 | Window Closed / Lapsed |