US2203075A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat exchange apparatus
Assignee: BUSH Manufacturing Co
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Filing: 1936-08-19
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Granted: 1940-06-04
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Expires: 1956-08-19
Abstract
No abstract record available.
Inventors
- 👤 Charles T Bappler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:29
CPC Classifications
F; F24; F24F; F24F5/00; F24F5/0007; F24F5/001; F25; F25B; F25B39/00; F25B39/02; F25B39/028; F25B41/00; F25B41/40; F25B41/42; Y; Y10; Y10T; Y10T137/00; Y10T137/4673; Y10T137/479; Y10T137/6416; Y10T137/6525; Y10T137/8593; Y10T137/85938; Y10T137/877
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1943-06-04 | 1943-12-04 | 1944-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-06-04 | 1947-12-04 | 1948-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-06-04 | 1951-12-04 | 1952-06-04 | $7700.00 | Window Closed / Lapsed |