US2162233A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Double burner valve
Assignee: W J SCHOENBERGER CO
•
Filing: 1938-05-20
•
Granted: 1939-06-13
•
Expires: 1958-05-20
Abstract
No abstract record available.
Inventors
- 👤 Robert E Schoenberger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:58
CPC Classifications
F; F23; F23N; F23N1/00; F23N1/007; F16; F16K; F16K5/00; F16K5/08; F16K5/10; F16K5/103; F16K5/106; F23N2235/00; F23N2235/12; F23N2235/16; Y; Y10; Y10S; Y10S137/00; Y10S137/905; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86509
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) | 1942-06-12 | 1942-12-12 | 1943-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-06-12 | 1946-12-12 | 1947-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-06-12 | 1950-12-12 | 1951-06-13 | $7700.00 | Window Closed / Lapsed |