US1258321A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for treating kepl char. &c.
Assignee: Diamond Match Co USA
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Filing: 1916-09-14
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Granted: 1918-03-05
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Expires: 1936-09-14
Abstract
No abstract record available.
Inventors
- 👤 Frederick Van Dyke Cruser
- 👤 Oliver Z Howard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:21
CPC Classifications
A; A01; A01C; A01C23/00; A01C23/04; A01C23/042; B; B01; B01F; B01F21/00; B01F21/15
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) | 1921-03-04 | 1921-09-03 | 1922-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1925-03-04 | 1925-09-03 | 1926-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1929-03-04 | 1929-09-03 | 1930-03-05 | $7700.00 | Window Closed / Lapsed |