US3086857A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of controlling liquid-solid interfaces by peltier heat
Assignee: AT&T Inc
•
Filing: 1957-01-23
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Granted: 1963-04-23
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Expires: 1977-01-23
Abstract
No abstract record available.
Inventors
- 👤 William G Pfann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 20:34
CPC Classifications
H; H01; H01G; H01G9/00; H01G9/21; C; C30; C30B; C30B13/00; C30B13/02; C30B13/32; C30B15/00; C30B15/14; C30B15/18; H10; H10N; H10N10/00; H10P; H10P95/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2743199A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-04-22 | 1966-10-22 | 1967-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-22 | 1970-10-22 | 1971-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-22 | 1974-10-22 | 1975-04-23 | $7700.00 | Window Closed / Lapsed |