US1826112A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Constant uniform delivery siphon
Assignee: Silica Gel Corp
•
Filing: 1929-02-02
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Granted: 1931-10-06
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Expires: 1949-02-02
Abstract
No abstract record available.
Inventors
- 👤 Wilson Alvin Chesley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 16:52
CPC Classifications
B; B01; B01L; B01L3/00; B01L3/02; B01L3/0289; B01L3/0293; Y; Y10; Y10T; Y10T137/00; Y10T137/0318; Y10T137/0324; Y10T137/0357; Y10T137/2496; Y10T137/2499; Y10T137/2713; Y10T137/2917; Y10T137/6851; Y10T137/7039; Y10T137/7287; Y10T137/7313; Y10T137/7316; Y10T137/7339; Y10T137/7355; Y10T137/8593; Y10T137/86187
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) | 1934-10-05 | 1935-04-06 | 1935-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1938-10-05 | 1939-04-06 | 1939-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1942-10-05 | 1943-04-06 | 1943-10-06 | $7700.00 | Window Closed / Lapsed |