US775320A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Centrifugal machine.
Assignee: Individual
•
Filing: 1904-01-23
•
Granted: 1904-11-22
•
Expires: 1924-01-23
Abstract
No abstract record available.
Inventors
- 👤 Arthur C Van Kirk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:55
CPC Classifications
B; B04; B04B; B04B1/00; B04B1/20; B04B2001/2083; B04B2001/2091
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) | 1907-11-22 | 1908-05-23 | 1908-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1911-11-22 | 1912-05-23 | 1912-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1915-11-22 | 1916-05-23 | 1916-11-22 | $7700.00 | Window Closed / Lapsed |