US3500650A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multistage direct transfer thermoelectric apparatus
Assignee: Westinghouse Electric Corp
•
Filing: 1968-05-13
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Granted: 1970-03-17
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Expires: 1988-05-13
Abstract
No abstract record available.
Inventors
- 👤 Cecil J Mole
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 15:34
CPC Classifications
F; F25; F25B; F25B21/00; F25B21/02; H; H10; H10N; H10N10/00; H10N10/10; H10N10/13
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3118285A
Cited
US2978875A
Cited
US3019609A
Cited
US3125860A
Cited
US3137142A
Cited
US3287923A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-03-16 | 1973-09-15 | 1974-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-16 | 1977-09-15 | 1978-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-16 | 1981-09-15 | 1982-03-17 | $7700.00 | Window Closed / Lapsed |