US2477348A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermoelectric apparatus
Assignee: —
•
Filing: —
•
Granted: 1949-07-26
•
Expires: 1966-07-26
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 17:37
CPC Classifications
—
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1626931A
Cited
US1553789A
Cited
US2021491A
Cited
US2106249A
Cited
US2057383A
Cited
US2271975A
Cited
US2316872A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-07-25 | 1953-01-24 | 1953-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-07-25 | 1957-01-24 | 1957-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-07-25 | 1961-01-24 | 1961-07-26 | $7700.00 | Window Closed / Lapsed |