Patent US2467157A successfully refreshed from Google Patents.
US2467157A
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Attachment for road grading machinery
Assignee: ROADGRADER GAUGE Corp
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Filing: 1946-05-29
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Granted: 1949-04-12
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Expires: 1966-05-29
Abstract
No abstract record available.
Inventors
- 👤 Schiavi Vincent
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:27
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/76; E02F3/7663; E02F3/7668; E02F3/7636; E02F3/764; E02F3/80; E02F3/815; E02F3/8157; Y; Y10; Y10S; Y10S116/00; Y10S116/13; Y10S37/00; Y10S37/906
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-04-11 | 1952-10-11 | 1953-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-04-11 | 1956-10-11 | 1957-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-04-11 | 1960-10-11 | 1961-04-12 | $7700.00 | Window Closed / Lapsed |