US2598903A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Canal lining machine
Assignee: WESTERN CONTRACTING Corp
•
Filing: 1948-08-05
•
Granted: 1952-06-03
•
Expires: 1968-08-05
Abstract
No abstract record available.
Inventors
- 👤 Irvin L Gebhard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:08
CPC Classifications
E; E01; E01C; E01C19/00; E01C19/48; E01C19/4833; E01C19/484; E01C19/4846; E02; E02B; E02B5/00; E02B5/02; Y; Y02; Y02A; Y02A40/00; Y02A40/10; Y02A40/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2090959A
Cited
US2101031A
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US2134689A
Cited
US2094974A
Cited
US2123989A
Cited
US2211933A
Cited
US2254448A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-06-03 | 1955-12-03 | 1956-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-06-03 | 1959-12-03 | 1960-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-06-03 | 1963-12-03 | 1964-06-03 | $7700.00 | Window Closed / Lapsed |