US2775201A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety devices for apparatus containing stored pressure energy
Assignee: British Messier Ltd
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Filing: 1952-08-28
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Granted: 1956-12-25
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Expires: 1972-08-28
Abstract
No abstract record available.
Inventors
- 👤 Conway Hugh Graham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 03:34
CPC Classifications
F; F42; F42B; F42B15/00; F02; F02K; F02K9/00; F02K9/08; F02K9/32; F02K9/38; F42B39/00; F42B39/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB612998A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-12-25 | 1960-06-25 | 1960-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-25 | 1964-06-25 | 1964-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-25 | 1968-06-25 | 1968-12-25 | $7700.00 | Window Closed / Lapsed |