Patent US1850221A successfully refreshed from Google Patents.
US1850221A
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Furnace mechanism and process for bloating clay
Assignee: AMERICAN FACE BRICK RES CORP
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Filing: 1929-10-07
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Granted: 1932-03-22
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Expires: 1949-10-07
Abstract
No abstract record available.
Inventors
- 👤 Edwin M Wyatt
- 👤 Howard F Weiss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:54
CPC Classifications
C; C04; C04B; C04B38/00; C04B38/06; C04B38/063; C04B38/0635; C04B38/064; F; F27; F27B; F27B7/00; F27B7/20; F27B7/33; F27D; F27D99/00; F27D2099/0085; F27D2099/0088; F27M; F27M2003/00; F27M2003/02
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) | 1935-03-22 | 1935-09-21 | 1936-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1939-03-22 | 1939-09-21 | 1940-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1943-03-22 | 1943-09-21 | 1944-03-22 | $7700.00 | Window Closed / Lapsed |