US648325A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for automatically filling and discharging filter-beds.
Assignee: Individual
•
Filing: 1899-10-13
•
Granted: 1900-04-24
•
Expires: 1919-10-13
Abstract
No abstract record available.
Inventors
- 👤 Samuel Henry Adams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 07:45
CPC Classifications
E; E03; E03F; E03F5/00; E03F5/04; E03F5/0401; E03F5/0402; Y; Y10; Y10T; Y10T137/00; Y10T137/2713; Y10T137/2774; Y10T137/2802; Y10T137/2815; Y10T137/2822; Y10T137/2842; Y10T137/2931; Y10T137/3115; Y10T137/3127; Y10T137/4673; Y10T137/4807
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) | 1903-04-24 | 1903-10-24 | 1904-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1907-04-24 | 1907-10-24 | 1908-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1911-04-24 | 1911-10-24 | 1912-04-24 | $7700.00 | Window Closed / Lapsed |