US1065246A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water-purifying apparatus.
Assignee: HELD Co
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Filing: 1912-08-29
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Granted: 1913-06-17
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Expires: 1932-08-29
Abstract
No abstract record available.
Inventors
- 👤 Siegfried Held
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:53
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/30; C02F1/32; C02F1/325; B; B01; B01D; B01D21/00; B01D21/0012
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) | 1916-06-16 | 1916-12-16 | 1917-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1920-06-16 | 1920-12-16 | 1921-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1924-06-16 | 1924-12-16 | 1925-06-17 | $7700.00 | Window Closed / Lapsed |