US3518838A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermoelectric devices
Assignee: York International Corp
•
Filing: 1962-09-10
•
Granted: 1970-07-07
•
Expires: 1982-09-10
Abstract
No abstract record available.
Inventors
- 👤 Alwin B Newton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:58
CPC Classifications
H; H10; H10N; H10N10/00; H10N10/80; H10N10/81; H10N10/817; H10N10/10; H10N10/13
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2837899A
Cited
US2729949A
Cited
US2997514A
Cited
US2949014A
Cited
US3086067A
Cited
US3040538A
Cited
US3050948A
Cited
US3077080A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-07-06 | 1974-01-05 | 1974-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-07-06 | 1978-01-05 | 1978-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-07-06 | 1982-01-05 | 1982-07-07 | $7700.00 | Window Closed / Lapsed |