US3364992A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plate type heat-exchangers having corrugated, zig-zag sheet members
Assignee: Automobiles Citroen SA
•
Filing: 1965-12-22
•
Granted: 1968-01-23
•
Expires: 1985-12-22
Abstract
No abstract record available.
Inventors
- 👤 Henry-Biabaud Edmond
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:30
CPC Classifications
F; F28; F28D; F28D9/00; F28D9/0062; Y; Y10; Y10S; Y10S165/00; Y10S165/355; Y10S165/356; Y10S165/387; Y10S165/391
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CA687006A
Cited
US1601637A
Cited
US2780446A
Cited
GB821430A
Cited
US2869835A
Cited
US2875986A
Cited
US3216494A
Cited
US3231017A
Cited
US3196942A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-01-22 | 1971-07-24 | 1972-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-01-22 | 1975-07-24 | 1976-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-01-22 | 1979-07-24 | 1980-01-23 | $7700.00 | Window Closed / Lapsed |