US2843367A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat exchanger
Assignee: Young Radiator Co
•
Filing: 1955-05-24
•
Granted: 1958-07-15
•
Expires: 1975-05-24
Abstract
No abstract record available.
Inventors
- 👤 Anthony D Bogus
- 👤 Donald W Christensen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:50
CPC Classifications
F; F28; F28F; F28F9/00; F28F9/02; F28F9/026; F28F9/0278; F02; F02B; F02B29/00; F02B29/04; F02B29/045; F02B29/0462; F28D; F28D7/00; F28D7/16; F28D7/163; F28D7/1653; F28D7/1661; F28F9/007; F28F9/013; F28F9/0202; F28F9/0204; F28F9/0209; F28F9/0212; F28D21/00; F28D2021/0019; F28D2021/008; F28D2021/0082; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2615687A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-07-14 | 1962-01-13 | 1962-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-14 | 1966-01-13 | 1966-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-14 | 1970-01-13 | 1970-07-15 | $7700.00 | Window Closed / Lapsed |