US2452774A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable push grader mount
Assignee: Keppel LeTourneau USA Inc
•
Filing: 1944-10-30
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Granted: 1948-11-02
•
Expires: 1964-10-30
Abstract
No abstract record available.
Inventors
- 👤 Tourneau Robert G Le
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:10
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/76; E02F3/7609; E02F3/7618
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1825434A
Cited
US1986173A
Cited
US1964360A
Cited
US2232672A
Cited
US2239943A
Cited
US2238346A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-11-02 | 1952-05-03 | 1952-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-11-02 | 1956-05-03 | 1956-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-11-02 | 1960-05-03 | 1960-11-02 | $7700.00 | Window Closed / Lapsed |