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Patent US2598799A successfully refreshed from Google Patents.
US2598799A
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Means for purging refrigeration systems
Assignee: Individual
•
Filing: 1949-01-04
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Granted: 1952-06-03
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Expires: 1969-01-04
Abstract
No abstract record available.
Inventors
- 👤 William J Kiene
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:11
CPC Classifications
F; F25; F25B; F25B43/00; F25B43/04; F25B43/043
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1636512A
Cited
US1652163A
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US1612963A
Cited
US1911464A
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US2062697A
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US2321964A
Cited
US2464631A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-06-03 | 1955-12-03 | 1956-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-06-03 | 1959-12-03 | 1960-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-06-03 | 1963-12-03 | 1964-06-03 | $7700.00 | Window Closed / Lapsed |