US2948973A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ditch clearing attachment for bulldozer blades
Assignee: Individual
•
Filing: 1956-07-10
•
Granted: 1960-08-16
•
Expires: 1976-07-10
Abstract
No abstract record available.
Inventors
- 👤 Clarence E Magouirk
- 👤 Monroe William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:09
CPC Classifications
E; E02; E02F; E02F5/00; E02F5/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CA515948A
Cited
US1466464A
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US1981284A
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US1993282A
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US2241666A
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US2312255A
Cited
US2387764A
Cited
US2640286A
Cited
US2646633A
Cited
US2766536A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-16 | 1964-02-15 | 1964-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-16 | 1968-02-15 | 1968-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-16 | 1972-02-15 | 1972-08-16 | $7700.00 | Window Closed / Lapsed |