US838658A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for extracting oils, &c.
Assignee: Individual
•
Filing: 1903-06-30
•
Granted: 1906-12-18
•
Expires: 1923-06-30
Abstract
No abstract record available.
Inventors
- 👤 Herbert A Silvera
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:40
CPC Classifications
B; B01; B01D; B01D1/00; C; C09; C09H; C09H3/00
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) | 1909-12-17 | 1910-06-18 | 1910-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1913-12-17 | 1914-06-18 | 1914-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1917-12-17 | 1918-06-18 | 1918-12-18 | $7700.00 | Window Closed / Lapsed |