US2197395A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Trench roller
Assignee: Galion Iron Works & Manufacturing Co
•
Filing: 1937-01-21
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Granted: 1940-04-16
•
Expires: 1957-01-21
Abstract
No abstract record available.
Inventors
- 👤 Raymond W Keeler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:02
CPC Classifications
E; E01; E01C; E01C19/00; E01C19/22; E01C19/23; E01C19/26; E01C19/268; E01C19/238
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) | 1943-04-16 | 1943-10-16 | 1944-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-04-16 | 1947-10-16 | 1948-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-04-16 | 1951-10-16 | 1952-04-16 | $7700.00 | Window Closed / Lapsed |