US2650556A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for distributing mixtures of vapors and liquid
Assignee: Shell Development Co
•
Filing: 1948-06-28
•
Granted: 1953-09-01
•
Expires: 1968-06-28
Abstract
No abstract record available.
Inventors
- 👤 James R Turner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:18
CPC Classifications
B; B01; B01F; B01F25/00; B01F25/20; B01F25/21; A; A01; A01C; A01C23/00; A01C23/02; A01C23/023; A01C23/024; B01F23/00; B01F23/40; B01F23/45; B01F23/454
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1031885A
Cited
FR596789A
Cited
US2148413A
Cited
US2285932A
Cited
US2441204A
Cited
US2461876A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-08-31 | 1957-03-02 | 1957-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-31 | 1961-03-02 | 1961-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-31 | 1965-03-02 | 1965-09-01 | $7700.00 | Window Closed / Lapsed |