Patent US1473372A successfully refreshed from Google Patents.
US1473372A
Expired / Lapsed
US
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Subgrading machine
Assignee: Individual
•
Filing: 1922-04-13
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Granted: 1923-11-06
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Expires: 1942-04-13
Abstract
No abstract record available.
Inventors
- 👤 Christian J Hug
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:01
CPC Classifications
E; E01; E01C; E01C23/00; E01C23/06; E01C23/08; E01C23/082; E02; E02F; E02F3/00; E02F3/04; E02F3/76; E02F3/7663; E02F3/7668
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1926-11-05 | 1927-05-07 | 1927-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1930-11-05 | 1931-05-07 | 1931-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1934-11-05 | 1935-05-07 | 1935-11-06 | $7700.00 | Window Closed / Lapsed |