Patent US1729424A successfully refreshed from Google Patents.
US1729424A
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US
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Method of and mechanism for drying materials
Assignee: Harshaw Chemical Co
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Filing: 1924-02-09
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Granted: 1929-09-24
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Expires: 1944-02-09
Abstract
No abstract record available.
Inventors
- 👤 William J Harshaw
- 👤 Charles S Parke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:01
CPC Classifications
F; F26; F26B; F26B17/00; F26B17/10; F26B17/106; F26B11/00; F26B11/02; F26B11/04; F26B11/0463; F26B11/0468; F26B11/0472
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) | 1932-09-23 | 1933-03-25 | 1933-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1936-09-23 | 1937-03-25 | 1937-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1940-09-23 | 1941-03-25 | 1941-09-24 | $7700.00 | Window Closed / Lapsed |