US2596036A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hot-gas valve
Assignee: Alco Valve Co
•
Filing: 1945-05-12
•
Granted: 1952-05-06
•
Expires: 1965-05-12
Abstract
No abstract record available.
Inventors
- 👤 Franklin M Macdougall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:15
CPC Classifications
F; F25; F25B; F25B39/00; F25B39/02; F25B39/028; F25B41/00; F25B41/30; F25B41/31; F25B41/33; F25B41/385; F25B41/40; F25B41/42; F25B41/45; F25B47/00; F25B47/02; F25B47/022; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7781; Y10T137/7835; Y10T137/8593; Y10T137/87249
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-05-06 | 1955-11-05 | 1956-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-05-06 | 1959-11-05 | 1960-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-05-06 | 1963-11-05 | 1964-05-06 | $7700.00 | Window Closed / Lapsed |