US2786704A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Closure securing means for pressure vessels
Assignee: Combustion Engineering Inc
•
Filing: 1955-04-25
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Granted: 1957-03-26
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Expires: 1975-04-25
Abstract
No abstract record available.
Inventors
- 👤 John J Presdee
- 👤 Einar E Tangard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:43
CPC Classifications
F; F16; F16J; F16J13/00; F16J13/02; F16J13/10; Y; Y10; Y10T; Y10T292/00; Y10T292/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2252488A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-03-25 | 1960-09-24 | 1961-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-03-25 | 1964-09-24 | 1965-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-03-25 | 1968-09-24 | 1969-03-26 | $7700.00 | Window Closed / Lapsed |