US3279532A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat exchanger tube-joint sealing arrangement
Assignee: Westinghouse Electric Corp
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Filing: 1964-05-28
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Granted: 1966-10-18
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Expires: 1984-05-28
Abstract
No abstract record available.
Inventors
- 👤 Jr Adolph H Pfeil
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:40
CPC Classifications
F; F28; F28F; F28F9/00; F28F9/02; F28F9/04; F28F9/06; F28F9/14; Y; Y10; Y10S; Y10S165/00; Y10S165/051; Y10S165/052; Y10S165/067; Y10S165/068
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-17 | 1970-04-18 | 1970-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-17 | 1974-04-18 | 1974-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-17 | 1978-04-18 | 1978-10-18 | $7700.00 | Window Closed / Lapsed |