US3476179A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plate-type heat exchanger
Assignee: Linde GmbH
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Filing: 1967-10-11
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Granted: 1969-11-04
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Expires: 1987-10-11
Abstract
No abstract record available.
Inventors
- 👤 Gerhard Meister
- 👤 Franz Kreissl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:45
CPC Classifications
F; F28; F28F; F28F3/00; F28F3/02; F28F3/04; F28F3/048; F28D; F28D9/00; F28D9/0031; F28D9/0037; F28F2215/00; F28F2215/10; F28F2275/00; F28F2275/14; Y; Y10; Y10S; Y10S165/00; Y10S165/355; Y10S165/356; Y10S165/387; Y10S165/392
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) | 1972-11-03 | 1973-05-05 | 1973-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-03 | 1977-05-05 | 1977-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-03 | 1981-05-05 | 1981-11-04 | $7700.00 | Window Closed / Lapsed |