US2827771A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Canal lining machine
Assignee: BAER STEEL PRODUCTS Inc
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Filing: 1954-12-20
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Granted: 1958-03-25
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Expires: 1974-12-20
Abstract
No abstract record available.
Inventors
- 👤 Baer Josef
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:45
CPC Classifications
E; E02; E02B; E02B5/00; E02B5/02; E01; E01C; E01C19/00; E01C19/48; E01C19/4833; E01C19/484; E01C19/4846; E01C23/00; E01C23/02; E01C23/025; Y; Y02; Y02A; Y02A40/00; Y02A40/10; Y02A40/22
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) | 1961-03-24 | 1961-09-23 | 1962-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-24 | 1965-09-23 | 1966-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-24 | 1969-09-23 | 1970-03-25 | $7700.00 | Window Closed / Lapsed |