US2566928A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat exchange apparatus
Assignee: Honeywell International Inc
•
Filing: 1947-12-10
•
Granted: 1951-09-04
•
Expires: 1967-12-10
Abstract
No abstract record available.
Inventors
- 👤 Bernard M Carter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:55
CPC Classifications
F; F28; F28F; F28F3/00; F28F3/02; F28F3/04; F28F3/042; F28F3/046; F28F3/048; Y; Y10; Y10S; Y10S165/00; Y10S165/355; Y10S165/356
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1943855A
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US1992097A
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US2049117A
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GB432936A
Cited
US2343387A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-09-03 | 1955-03-05 | 1955-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-09-03 | 1959-03-05 | 1959-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-09-03 | 1963-03-05 | 1963-09-04 | $7700.00 | Window Closed / Lapsed |