Patent US1424560A successfully refreshed from Google Patents.
US1424560A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tunnel kiln
Assignee: Individual
•
Filing: 1922-02-27
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Granted: 1922-08-01
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Expires: 1942-02-27
Abstract
No abstract record available.
Inventors
- 👤 Duckham Arthur Mcdougall
- 👤 Kent Arthur Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:14
CPC Classifications
F; F27; F27B; F27B9/00; F27B9/30; F27B9/3005
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) | 1925-07-31 | 1926-01-30 | 1926-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1929-07-31 | 1930-01-30 | 1930-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1933-07-31 | 1934-01-30 | 1934-08-01 | $7700.00 | Window Closed / Lapsed |