US2937856A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plate heat exchanger
Assignee: KUSEL DAIRY EQUIPMENT CO
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Filing: 1956-01-26
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Granted: 1960-05-24
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Expires: 1976-01-26
Abstract
No abstract record available.
Inventors
- 👤 Meredith C Thomson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:44
CPC Classifications
F; F28; F28F; F28F3/00; F28F3/08; F28F3/083; F28F3/02; F28F3/04; F28F3/042; F28F3/046; F28F2230/00
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) | 1963-05-24 | 1963-11-23 | 1964-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-24 | 1967-11-23 | 1968-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-24 | 1971-11-23 | 1972-05-24 | $7700.00 | Window Closed / Lapsed |