US3421589A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Blade mountings and controls for road graders
Assignee: Individual
•
Filing: 1965-09-16
•
Granted: 1969-01-14
•
Expires: 1985-09-16
Abstract
No abstract record available.
Inventors
- 👤 Theodore Rivinius
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:56
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/76; E02F3/80; E02F3/84; E02F3/844
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1732892A
Cited
US1720189A
Cited
US2074081A
Cited
US2497778A
Cited
US2904911A
Cited
US2941319A
Cited
US3094796A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-14 | 1972-07-15 | 1973-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-14 | 1976-07-15 | 1977-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-14 | 1980-07-15 | 1981-01-14 | $7700.00 | Window Closed / Lapsed |