US2715516A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat exchanger design
Assignee: Standard Oil Co
•
Filing: 1951-10-25
•
Granted: 1955-08-16
•
Expires: 1971-10-25
Abstract
No abstract record available.
Inventors
- 👤 Eugene J Reinold
- 👤 Lawrence A Barry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 02:08
CPC Classifications
F; F28; F28F; F28F9/00; F28F9/22; Y; Y10; Y10S; Y10S165/00; Y10S165/355; Y10S165/40; Y10S165/401; Y10S165/416; Y10S165/417; Y10S165/418
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB190725658A
Cited
US1284868A
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US1525094A
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GB200463A
Cited
US1764200A
Cited
US1738848A
Cited
US1904875A
Cited
US2223313A
Cited
US2498145A
Cited
US2595822A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-08-15 | 1959-02-14 | 1959-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-08-15 | 1963-02-14 | 1963-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-08-15 | 1967-02-14 | 1967-08-16 | $7700.00 | Window Closed / Lapsed |