Patent US3173049A successfully refreshed from Google Patents.
Patent US3494426A successfully refreshed from Google Patents.
US3494426A
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Method and apparatus for controlling elevation of graders and similar equipment
Assignee: Newport Corp USA
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Filing: 1966-03-17
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Granted: 1970-02-10
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Expires: 1986-03-17
Abstract
No abstract record available.
Inventors
- 👤 Robert H Studebaker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:15
CPC Classifications
G; G01; G01C; G01C15/00; G01C15/002; G01C15/004; G01C15/006; E; E02; E02F; E02F3/00; E02F3/04; E02F3/76; E02F3/80; E02F3/84; E02F3/844; E02F3/847
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2661653A
Cited
US2916836A
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US2874789A
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US2973593A
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US3046681A
Cited
US3094796A
Cited
US3321248A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-02-09 | 1973-08-11 | 1974-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-09 | 1977-08-11 | 1978-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-09 | 1981-08-11 | 1982-02-10 | $7700.00 | Window Closed / Lapsed |