US2949283A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for heat transfer
Assignee: Individual
•
Filing: 1956-05-11
•
Granted: 1960-08-16
•
Expires: 1976-05-11
Abstract
No abstract record available.
Inventors
- 👤 Millard F Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:49
CPC Classifications
F; F28; F28F; F28F1/00; F28F1/10; F28F1/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1459318A
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US1764194A
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US1925822A
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CH175143A
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US2158868A
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US2169115A
Cited
US2380026A
Cited
US2451903A
Cited
US2471960A
Cited
US2774808A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-16 | 1964-02-15 | 1964-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-16 | 1968-02-15 | 1968-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-16 | 1972-02-15 | 1972-08-16 | $7700.00 | Window Closed / Lapsed |