Patent US1803407A successfully refreshed from Google Patents.
US1803407A
Expired / Lapsed
US
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Lined tank and method of making the same
Assignee: ACF Industries Inc
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Filing: 1929-01-15
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Granted: 1931-05-05
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Expires: 1949-01-15
Abstract
No abstract record available.
Inventors
- 👤 John M Rohlfing
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:30
CPC Classifications
B; B21; B21D; B21D51/00; Y; Y10; Y10S; Y10S220/00; Y10S220/917
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) | 1934-05-04 | 1934-11-03 | 1935-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1938-05-04 | 1938-11-03 | 1939-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1942-05-04 | 1942-11-03 | 1943-05-05 | $7700.00 | Window Closed / Lapsed |