US2846985A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic control mechanism for pressure vessels
Assignee: Individual
•
Filing: 1945-03-07
•
Granted: 1958-08-12
•
Expires: 1965-03-07
Abstract
No abstract record available.
Inventors
- 👤 Alva G Blanchard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 02:13
CPC Classifications
G; G05; G05D; G05D9/00; G05D9/04; F; F22; F22D; F22D5/00; F22D5/08; F24; F24D; F24D19/00; F24D19/10; F24D19/1003; Y; Y10; Y10T; Y10T137/00; Y10T137/2931; Y10T137/3115; Y10T137/3143; Y10T137/3146; Y10T137/7287; Y10T137/7358; Y10T137/7365; Y10T137/8593; Y10T137/86928; Y10T137/87016
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) | 1961-08-11 | 1962-02-10 | 1962-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-11 | 1966-02-10 | 1966-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-11 | 1970-02-10 | 1970-08-12 | $7700.00 | Window Closed / Lapsed |