US2835055A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power trencher
Assignee: STAMPINGS Inc
•
Filing: 1956-06-04
•
Granted: 1958-05-20
•
Expires: 1976-06-04
Abstract
No abstract record available.
Inventors
- 👤 Dale J Hermes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:50
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/08; E02F3/12; E02F3/14; E02F3/142; E02F3/10; E02F3/145
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US351701A
Cited
US2714262A
Cited
US717530A
Cited
US2231983A
Cited
US2599778A
Cited
US2584287A
Cited
US2684542A
Cited
US2751698A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-05-19 | 1961-11-18 | 1962-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-19 | 1965-11-18 | 1966-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-19 | 1969-11-18 | 1970-05-20 | $7700.00 | Window Closed / Lapsed |