US2434734A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compressor valve
Assignee: Copeland Refrigeration Corp
•
Filing: 1945-04-06
•
Granted: 1948-01-20
•
Expires: 1965-04-06
Abstract
No abstract record available.
Inventors
- 👤 Oskar H Buschmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 01:12
CPC Classifications
F; F16; F16K; F16K15/00; F16K15/14; F16K15/16; F04; F04B; F04B39/00; F04B39/10; F04B39/1073; F16K15/161
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US943996A
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US1400373A
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US1629495A
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US1630799A
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US1595468A
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US1661148A
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US2001885A
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US2199482A
Cited
US2298749A
Cited
US2372938A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-01-19 | 1951-07-21 | 1952-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-01-19 | 1955-07-21 | 1956-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-01-19 | 1959-07-21 | 1960-01-20 | $7700.00 | Window Closed / Lapsed |