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US636356A
Expired / Lapsed
US
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Water-filter.
Assignee: Individual
•
Filing: 1898-12-03
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Granted: 1899-11-07
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Expires: 1918-12-03
Abstract
No abstract record available.
Inventors
- 👤 William H Randall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:06
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/001; C02F1/004; C02F1/68; C02F1/685; C02F1/688; C02F1/006
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) | 1902-11-07 | 1903-05-09 | 1903-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1906-11-07 | 1907-05-09 | 1907-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1910-11-07 | 1911-05-09 | 1911-11-08 | $7700.00 | Window Closed / Lapsed |