Patent US3405838A successfully refreshed from Google Patents.
US3405838A
Expired / Lapsed
US
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Pressure vessel venting means
Assignee: EIDP Inc
•
Filing: 1967-09-12
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Granted: 1968-10-15
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Expires: 1987-09-12
Abstract
No abstract record available.
Inventors
- 👤 Edward S Preisendanz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:41
CPC Classifications
B; B65; B65D; B65D83/00; B65D83/14; B65D83/70
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2795350A
Cited
US3245578A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-10-15 | 1972-04-15 | 1972-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-15 | 1976-04-15 | 1976-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-15 | 1980-04-15 | 1980-10-15 | $7700.00 | Window Closed / Lapsed |