Patent US2964914A successfully refreshed from Google Patents.
US2964914A
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US
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Separation of air
Assignee: BOC Group Ltd
•
Filing: 1956-05-11
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Granted: 1960-12-20
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Expires: 1976-05-11
Abstract
No abstract record available.
Inventors
- 👤 Schuftan Paul Maurice
- 👤 Neill John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 03:31
CPC Classifications
F; F25; F25J; F25J3/00; F25J3/02; F25J3/04; F25J3/04151; F25J3/04163; F25J3/04169; F25J3/04242; F25J3/04248; F25J3/04284; F25J3/0429; F25J3/04296; F25J3/04303; F25J3/04375; F25J3/04393; F25J3/044; F25J3/04406; F25J3/04412; F25J2200/00; F25J2200/70; F25J2205/00; F25J2205/24; F25J2205/30; F25J2205/84; F25J2220/00; F25J2220/40; F25J2245/00; F25J2245/40; Y; Y10; Y10S; Y10S62/00; Y10S62/902; Y10S62/909
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USRE23463E
Cited
US1157959A
Cited
US1615597A
Cited
US1830157A
Cited
US1996519A
Cited
US2541409A
Cited
US2517134A
Cited
US2552559A
Cited
US2680357A
Cited
US2572933A
Cited
US2619810A
Cited
US2663168A
Cited
US2673456A
Cited
US2873583A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-12-20 | 1964-06-20 | 1964-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-20 | 1968-06-20 | 1968-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-20 | 1972-06-20 | 1972-12-20 | $7700.00 | Window Closed / Lapsed |