Patent US1221990A successfully refreshed from Google Patents.
US1221990A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of obtaining starch.
Assignee: WASHBURN CROSBY Co
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Filing: 1916-07-03
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Granted: 1917-04-10
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Expires: 1936-07-03
Abstract
No abstract record available.
Inventors
- 👤 Hiram C Holden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:41
CPC Classifications
C; C08; C08B; C08B30/00; C08B30/04; C08B30/042; C08B30/044
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) | 1920-04-09 | 1920-10-09 | 1921-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1924-04-09 | 1924-10-09 | 1925-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1928-04-09 | 1928-10-09 | 1929-04-10 | $7700.00 | Window Closed / Lapsed |