US2688237A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Expansion device for refrigeration units
Assignee: Brewer Titchener Corp
•
Filing: 1951-08-13
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Granted: 1954-09-07
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Expires: 1971-08-13
Abstract
No abstract record available.
Inventors
- 👤 Carson H Beane
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:18
CPC Classifications
F; F25; F25B; F25B41/00; F25B41/30; F25B41/37; F25B2400/00; F25B2400/05; F25B2400/052; F25B2400/054; F25B40/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2181856A
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US2326093A
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US2393854A
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US2455298A
Cited
US2467078A
Cited
US2486822A
Cited
US2520045A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-09-06 | 1958-03-08 | 1958-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-09-06 | 1962-03-08 | 1962-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-09-06 | 1966-03-08 | 1966-09-07 | $7700.00 | Window Closed / Lapsed |