Patent US3851650A successfully refreshed from Google Patents.
Patent US999895A successfully refreshed from Google Patents.
US999895A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filtering device.
Assignee: Individual
•
Filing: 1910-09-21
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Granted: 1911-08-08
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Expires: 1930-09-21
Abstract
No abstract record available.
Inventors
- 👤 Walter J Smart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:03
CPC Classifications
B; B01; B01D; B01D46/00; B01D46/10
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) | 1914-08-07 | 1915-02-06 | 1915-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1918-08-07 | 1919-02-06 | 1919-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1922-08-07 | 1923-02-06 | 1923-08-08 | $7700.00 | Window Closed / Lapsed |