Patent US2534973A successfully refreshed from Google Patents.
US2534973A
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US
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Cooling apparatus
Assignee: General Electric Co
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Filing: 1949-03-02
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Granted: 1950-12-19
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Expires: 1969-03-02
Abstract
No abstract record available.
Inventors
- 👤 Carl L Ipsen
- 👤 Norman B Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:47
CPC Classifications
C; C21; C21D; C21D1/00; C21D1/84; C21D9/00; C21D9/52; C21D9/54; C21D9/56; C21D9/573
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-12-18 | 1954-06-19 | 1954-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-12-18 | 1958-06-19 | 1958-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-12-18 | 1962-06-19 | 1962-12-19 | $7700.00 | Window Closed / Lapsed |