US898415A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metallurgical apparatus.
Assignee: Individual
•
Filing: 1908-07-29
•
Granted: 1908-09-08
•
Expires: 1928-07-29
Abstract
No abstract record available.
Inventors
- 👤 William A Merralls
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:22
CPC Classifications
B; B01; B01F; B01F23/00; B01F23/20; B01F23/23; B01F23/234; B01F23/2342
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) | 1911-09-08 | 1912-03-09 | 1912-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1915-09-08 | 1916-03-09 | 1916-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1919-09-08 | 1920-03-09 | 1920-09-08 | $7700.00 | Window Closed / Lapsed |