Patent US1531407A successfully refreshed from Google Patents.
US1531407A
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US
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Charging machine for annealing furnaces
Assignee: United Engineering and Foundry Co
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Filing: 1924-08-12
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Granted: 1925-03-31
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Expires: 1944-08-12
Abstract
No abstract record available.
Inventors
- 👤 Johnson Lane
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:03
CPC Classifications
F; F27; F27B; F27B17/00; F27B17/0016; F27D; F27D3/00; F27D3/06; F27D2003/0034; F27D2003/0046; F27D2003/0048; F27D2003/005; F27D3/12; F27D2003/125; F27D2003/126
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) | 1928-03-30 | 1928-09-29 | 1929-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1932-03-30 | 1932-09-29 | 1933-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1936-03-30 | 1936-09-29 | 1937-03-31 | $7700.00 | Window Closed / Lapsed |