Patent US3435891A successfully refreshed from Google Patents.
US3435891A
Expired / Lapsed
US
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Air flow baffle for rectifier heat exchanger
Assignee: Infineon Technologies Americas Corp
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Filing: 1967-03-23
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Granted: 1969-04-01
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Expires: 1987-03-23
Abstract
No abstract record available.
Inventors
- 👤 Frank W Parrish
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:33
CPC Classifications
H; H10; H10W; H10W40/00; H10W40/40; H10W40/43; Y; Y10; Y10S; Y10S257/00; Y10S257/909
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2927250A
Cited
US2169109A
Cited
US2340855A
Cited
US2904316A
Cited
US2842722A
Cited
US3179570A
Cited
US3364987A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-03-31 | 1972-09-30 | 1973-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-31 | 1976-09-30 | 1977-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-31 | 1980-09-30 | 1981-04-01 | $7700.00 | Window Closed / Lapsed |