US3548158A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat transfer device
Assignee: Emerson Electric Co
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Filing: 1969-02-04
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Granted: 1970-12-15
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Expires: 1989-02-04
Abstract
No abstract record available.
Inventors
- 👤 Garvin M Mccaskill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:20
CPC Classifications
H; H05; H05B; H05B3/00; H05B3/40; H05B3/54; H05B3/58; F; F16; F16L; F16L53/00; F16L53/30; F16L53/35; F16L53/38; F24; F24H; F24H1/00; F24H1/10; F24H1/12; F24H1/14; F24H1/142
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) | 1973-12-14 | 1974-06-15 | 1974-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-14 | 1978-06-15 | 1978-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-14 | 1982-06-15 | 1982-12-15 | $7700.00 | Window Closed / Lapsed |