Patent FR1061107A successfully refreshed from Google Patents.
US1869340A
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US
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Method and apparatus for heat transfer
Assignee: Standard Oil Development Co
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Filing: 1929-12-17
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Granted: 1932-07-26
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Expires: 1949-12-17
Abstract
No abstract record available.
Inventors
- 👤 Jr Matthew D Mann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:12
CPC Classifications
F; F28; F28D; F28D7/00; F28D7/02; F28D7/024
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) | 1935-07-26 | 1936-01-25 | 1936-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1939-07-26 | 1940-01-25 | 1940-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1943-07-26 | 1944-01-25 | 1944-07-26 | $7700.00 | Window Closed / Lapsed |