US994679A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air-lift for agitators for ore or other materials.
Assignee: JULIUS F THOMASSON
•
Filing: 1910-08-06
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Granted: 1911-06-06
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Expires: 1930-08-06
Abstract
No abstract record available.
Inventors
- 👤 Leon Paul Hills
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:57
CPC Classifications
B; B01; B01F; B01F33/00; B01F33/40; B01F33/405; B01F33/4051; B01F33/40512; B01F33/40511
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) | 1914-06-05 | 1914-12-05 | 1915-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1918-06-05 | 1918-12-05 | 1919-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1922-06-05 | 1922-12-05 | 1923-06-06 | $7700.00 | Window Closed / Lapsed |