US2862693A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Support for finned tube type heat exchangers
Assignee: American Radiator and Standard Sanitary Corp
•
Filing: 1953-07-24
•
Granted: 1958-12-02
•
Expires: 1973-07-24
Abstract
No abstract record available.
Inventors
- 👤 Tinker Townsend
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:00
CPC Classifications
F; F28; F28F; F28F9/00; F28F9/007; F28F9/013; F28F9/0131; F28F9/0138; F28F2265/00; F28F2265/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2675722A
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US884013A
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US1608772A
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US1500895A
Cited
US1772806A
Cited
GB532968A
Cited
US2241209A
Cited
US2256993A
Cited
US2440803A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-12-01 | 1962-06-02 | 1962-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-01 | 1966-06-02 | 1966-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-01 | 1970-06-02 | 1970-12-02 | $7700.00 | Window Closed / Lapsed |