US1579158A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water filter
Assignee: Individual
•
Filing: 1923-01-08
•
Granted: 1926-03-30
•
Expires: 1943-01-08
Abstract
No abstract record available.
Inventors
- 👤 Robert H Smilie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 18:54
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/001; C02F1/003; C02F1/28; C02F1/283; Y; Y10; Y10T; Y10T137/00; Y10T137/2713; Y10T137/272; Y10T137/2747; Y10T137/2829; Y10T137/2842; Y10T137/2911
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) | 1929-03-29 | 1929-09-28 | 1930-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1933-03-29 | 1933-09-28 | 1934-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1937-03-29 | 1937-09-28 | 1938-03-30 | $7700.00 | Window Closed / Lapsed |