US2429508A
Expired / Lapsed
US
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Plate heat exchange apparatus
Assignee: CYRIL TERENCE DELANEY AND GALLAY Ltd
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Filing: 1944-02-03
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Granted: 1947-10-21
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Expires: 1964-02-03
Abstract
No abstract record available.
Inventors
- 👤 Belaieff James Frank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:39
CPC Classifications
F; F28; F28D; F28D1/00; F28D1/02; F28D1/03; F28D1/0366; F28D9/00; F28D9/0012; F28D9/0018; F24; F24F; F24F2203/00; F24F2203/10; F24F2203/1048; F24F2203/1052; F24F2203/1068; F24F2203/1084; F24F2203/1096; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/1234; Y10T428/12389; Y10T428/1241; Y10T428/24; Y10T428/24628; Y10T428/24669
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) | 1950-10-20 | 1951-04-21 | 1951-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-10-20 | 1955-04-21 | 1955-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-10-20 | 1959-04-21 | 1959-10-21 | $7700.00 | Window Closed / Lapsed |