US1934713A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid flow controller
Assignee: GEN ZEOLITE CO
•
Filing: 1931-04-10
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Granted: 1933-11-14
•
Expires: 1951-04-10
Abstract
No abstract record available.
Inventors
- 👤 Walter J Hughes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:02
CPC Classifications
G; G05; G05D; G05D7/00; G05D7/01; G05D7/0193; Y; Y10; Y10T; Y10T137/00; Y10T137/0318; Y10T137/0324; Y10T137/0357; Y10T137/0368; Y10T137/2496; Y10T137/2514; Y10T137/2521; Y10T137/2931; Y10T137/3115; Y10T137/7287; Y10T137/7358; Y10T137/7368; Y10T137/7371; Y10T137/7374; Y10T137/7381; Y10T137/7387; Y10T137/7391; Y10T137/7722; Y10T137/7758; Y10T137/7759; Y10T137/776; Y10T137/7781; Y10T137/7784; Y10T137/7787; Y10T137/7788; Y10T137/7789; Y10T137/7793; Y10T137/7805; Y10T137/8593; Y10T137/86493; Y10T137/86718; Y10T137/86759; Y10T137/86767; Y10T137/87265; Y10T137/87499
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) | 1936-11-13 | 1937-05-15 | 1937-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1940-11-13 | 1941-05-15 | 1941-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1944-11-13 | 1945-05-15 | 1945-11-14 | $7700.00 | Window Closed / Lapsed |