US995449A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ore-concentrator.
Assignee: EUGENE R DAY
•
Filing: 1911-03-28
•
Granted: 1911-06-20
•
Expires: 1931-03-28
Abstract
No abstract record available.
Inventors
- 👤 Frank Franz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 03:07
CPC Classifications
B; B03; B03B; B03B5/00; B03B5/02; B03B5/04; B03B5/06; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18056; Y10T74/18064
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) | 1914-06-19 | 1914-12-19 | 1915-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1918-06-19 | 1918-12-19 | 1919-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1922-06-19 | 1922-12-19 | 1923-06-20 | $7700.00 | Window Closed / Lapsed |