US2842283A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Closure for pressure vessels
Assignee: WM POWELL Co
•
Filing: 1956-02-20
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Granted: 1958-07-08
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Expires: 1976-02-20
Abstract
No abstract record available.
Inventors
- 👤 Russell G Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:32
CPC Classifications
F; F16; F16K; F16K3/00; F16K3/30; F16K3/312; F16K3/02; F16K3/0281; Y; Y10; Y10T; Y10T137/00; Y10T137/4238; Y10T137/4358; Y10T137/4442
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-07-07 | 1962-01-06 | 1962-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-07 | 1966-01-06 | 1966-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-07 | 1970-01-06 | 1970-07-08 | $7700.00 | Window Closed / Lapsed |