US2320482A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stopcock control device
Assignee: Baker Petrolite LLC
•
Filing: 1941-03-05
•
Granted: 1943-06-01
•
Expires: 1961-03-05
Abstract
No abstract record available.
Inventors
- 👤 Richard W Stenzel
- 👤 James G Suthard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 05:30
CPC Classifications
B; B01; B01L; B01L3/00; B01L3/56; B01L3/567; F; F16; F16K; F16K5/00; F16K5/08; Y; Y10; Y10T; Y10T137/00; Y10T137/6851; Y10T137/7043; Y10T137/7062
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1946-05-31 | 1946-11-30 | 1947-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1950-05-31 | 1950-11-30 | 1951-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1954-05-31 | 1954-11-30 | 1955-06-01 | $7700.00 | Window Closed / Lapsed |