US2777219A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Trenching machine
Assignee: Individual
•
Filing: 1953-04-24
•
Granted: 1957-01-15
•
Expires: 1973-04-24
Abstract
No abstract record available.
Inventors
- 👤 Robert J Brant
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 00:16
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/96; E02F3/961; E02F3/08; E02F3/10; E02F3/76; E02F5/00; E02F5/02; E02F5/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US167805A
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US234352A
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US351701A
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US1108268A
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US1538565A
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US1767017A
Cited
US2140105A
Cited
US2169184A
Cited
GB591337A
Cited
US2594990A
Cited
US2519076A
Cited
US2519077A
Cited
US2684542A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-01-15 | 1960-07-16 | 1961-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-15 | 1964-07-16 | 1965-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-15 | 1968-07-16 | 1969-01-15 | $7700.00 | Window Closed / Lapsed |