US2822151A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Connection for plate heat exchanger
Assignee: Olin Corp
•
Filing: 1954-10-22
•
Granted: 1958-02-04
•
Expires: 1974-10-22
Abstract
No abstract record available.
Inventors
- 👤 Charles A Heuer
- 👤 Richard F Adams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:17
CPC Classifications
F; F28; F28F; F28F3/00; F28F3/12; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/4935; Y10T29/49366
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1143302A
Cited
US2039193A
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US2088391A
Cited
US2410912A
Cited
US2690002A
Cited
US2662273A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-02-03 | 1961-08-05 | 1962-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-02-03 | 1965-08-05 | 1966-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-02-03 | 1969-08-05 | 1970-02-04 | $7700.00 | Window Closed / Lapsed |