US672231A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for the purification of water.
Assignee: WALTER LAUDER
•
Filing: 1900-12-07
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Granted: 1901-04-16
•
Expires: 1920-12-07
Abstract
No abstract record available.
Inventors
- 👤 Jean Marie Auguste Lacomme
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:54
CPC Classifications
C; C25; C25D; C25D17/00
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) | 1904-04-15 | 1904-10-15 | 1905-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1908-04-15 | 1908-10-15 | 1909-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1912-04-15 | 1912-10-15 | 1913-04-16 | $7700.00 | Window Closed / Lapsed |