US3014702A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat exchanger
Assignee: Dow Chemical Co
•
Filing: 1958-12-01
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Granted: 1961-12-26
•
Expires: 1978-12-01
Abstract
No abstract record available.
Inventors
- 👤 Charles F Oldershaw
- 👤 Lynn Scott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:36
CPC Classifications
F; F28; F28F; F28F9/00; F28F9/22; B; B29; B29B; B29B13/00; B29B13/04; Y; Y10; Y10S; Y10S165/00; Y10S165/905
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) | 1964-12-25 | 1965-06-26 | 1965-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-12-25 | 1969-06-26 | 1969-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-12-25 | 1973-06-26 | 1973-12-26 | $7700.00 | Window Closed / Lapsed |