US1850879A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve and coupling
Assignee: Individual
•
Filing: 1930-04-25
•
Granted: 1932-03-22
•
Expires: 1950-04-25
Abstract
No abstract record available.
Inventors
- 👤 Nathan C Hunt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:24
CPC Classifications
F; F16; F16K; F16K3/00; F16K3/22; F16K3/24; F16K3/26; F16K3/265; F16L; F16L37/00; F16L37/08; F16L37/12; F16L37/127; F16L37/28; F16L37/38; F16L37/46; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86574; Y10T137/8667; Y10T137/86694; Y10T137/86702
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) | 1935-03-22 | 1935-09-21 | 1936-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1939-03-22 | 1939-09-21 | 1940-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1943-03-22 | 1943-09-21 | 1944-03-22 | $7700.00 | Window Closed / Lapsed |