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US2468902A
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Double-walled body for hot gases or vapors under superatmospheric pressure
Assignee: Aktiengesellschaft fuer Technische Studien
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Filing: 1945-08-21
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Granted: 1949-05-03
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Expires: 1965-08-21
Abstract
No abstract record available.
Inventors
- 👤 Villiger Eugen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 06:36
CPC Classifications
F; F23; F23R; F23R3/00; F23R3/007; F16; F16L; F16L59/00; F16L59/14; F16L59/147
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US459035A
Cited
US950694A
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US1714948A
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US2059487A
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US2150182A
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US2076210A
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US2301657A
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US2314667A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-05-02 | 1952-11-01 | 1953-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-05-02 | 1956-11-01 | 1957-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-05-02 | 1960-11-01 | 1961-05-03 | $7700.00 | Window Closed / Lapsed |