Patent US2954141A successfully refreshed from Google Patents.
US2954141A
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US
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Closure for pressure vessels
Assignee: KRAMER MACHINE AND ENGINEERING
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Filing: 1956-01-26
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Granted: 1960-09-27
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Expires: 1976-01-26
Abstract
No abstract record available.
Inventors
- 👤 James H Kramer
- 👤 Will R Moshier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 09:43
CPC Classifications
F; F16; F16J; F16J13/00; F16J13/02; F16J13/12; B; B01; B01J; B01J3/00; B01J3/03
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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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) | 1963-09-27 | 1964-03-28 | 1964-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-27 | 1968-03-28 | 1968-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-27 | 1972-03-28 | 1972-09-27 | $7700.00 | Window Closed / Lapsed |