US2497677A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refrigerating system, including flow control devices
Assignee: General Electric Co
•
Filing: 1944-04-26
•
Granted: 1950-02-14
•
Expires: 1964-04-26
Abstract
No abstract record available.
Inventors
- 👤 Harold F Lathrop
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 00:45
CPC Classifications
F; F25; F25B; F25B41/00; F25B41/30; F25B41/31; F25B41/33; F25B41/335; F25B2600/00; F25B2600/25; F25B2600/2507
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US971788A
Cited
US990772A
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US1988776A
Cited
US2165519A
Cited
US2242334A
Cited
US2320055A
Cited
US2319993A
Cited
US2363010A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-02-13 | 1953-08-15 | 1954-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-02-13 | 1957-08-15 | 1958-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-02-13 | 1961-08-15 | 1962-02-14 | $7700.00 | Window Closed / Lapsed |