Patent US870138A successfully refreshed from Google Patents.
US870138A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Feed-water filter.
Assignee: Individual
•
Filing: 1907-02-23
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Granted: 1907-11-05
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Expires: 1927-02-23
Abstract
No abstract record available.
Inventors
- 👤 Oman L Stump
- 👤 Charles B King
- 👤 Harry J Barnhart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:55
CPC Classifications
B; B01; B01D; B01D35/00; B01D35/18; B01D33/00; B01D33/06; B01D33/70; B01D33/72
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) | 1910-11-04 | 1911-05-06 | 1911-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1914-11-04 | 1915-05-06 | 1915-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1918-11-04 | 1919-05-06 | 1919-11-05 | $7700.00 | Window Closed / Lapsed |