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US883467A
Expired / Lapsed
US
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Water-purifying system for swimming-tanks.
Assignee: SWIMMING POOL FILTRATION Co
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Filing: 1905-03-10
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Granted: 1908-03-31
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Expires: 1925-03-10
Abstract
No abstract record available.
Inventors
- 👤 Garryt D Mitchell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:24
CPC Classifications
B; B01; B01D; B01D24/00; B01D24/02; B01D24/10; B01D24/14
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) | 1911-03-31 | 1911-09-30 | 1912-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1915-03-31 | 1915-09-30 | 1916-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1919-03-31 | 1919-09-30 | 1920-03-31 | $7700.00 | Window Closed / Lapsed |