US2051576A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recovery of krypton and xenon
Assignee: Airco Inc
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Filing: 1936-04-06
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Granted: 1936-08-18
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Expires: 1956-04-06
Abstract
No abstract record available.
Inventors
- 👤 Joseph L Schlitt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:53
CPC Classifications
F; F25; F25J; F25J3/00; F25J3/02; F25J3/04; F25J3/04642; F25J3/04745; C; C01; C01B; C01B23/00; F25J3/04248; F25J3/04333; F25J3/04351; F25J3/04624; F25J2200/00; F25J2200/02; F25J2200/04; Y; Y10; Y10S; Y10S62/00; Y10S62/923; Y10S62/925
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1939-08-18 | 1940-02-17 | 1940-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1943-08-18 | 1944-02-17 | 1944-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1947-08-18 | 1948-02-17 | 1948-08-18 | $7700.00 | Window Closed / Lapsed |