US1930848A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for injecting liquid material into gases
Assignee: Shell Development Co
•
Filing: 1931-01-20
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Granted: 1933-10-17
•
Expires: 1951-01-20
Abstract
No abstract record available.
Inventors
- 👤 Chester C Ashley
- 👤 William I Steele
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 02:28
CPC Classifications
C; C10; C10L; C10L3/00; C10L3/003; C10L3/006; B; B01; B01F; B01F23/00; B01F23/20; B01F23/29; B01F23/291; Y; Y10; Y10S; Y10S261/00; Y10S261/17
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) | 1936-10-16 | 1937-04-17 | 1937-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1940-10-16 | 1941-04-17 | 1941-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1944-10-16 | 1945-04-17 | 1945-10-17 | $7700.00 | Window Closed / Lapsed |