US2191232A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve and sealing means therefor
Assignee: Individual
•
Filing: 1938-08-25
•
Granted: 1940-02-20
•
Expires: 1958-08-25
Abstract
No abstract record available.
Inventors
- 👤 Heinen Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:36
CPC Classifications
H; H04; H04L; H04L13/00; H04L13/18; H04L13/188; F; F16; F16K; F16K5/00; F16K5/08; F16K5/14; F16K5/20; F16K5/205; F16K5/207
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) | 1943-02-19 | 1943-08-21 | 1944-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-02-19 | 1947-08-21 | 1948-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-02-19 | 1951-08-21 | 1952-02-20 | $7700.00 | Window Closed / Lapsed |