US2468171A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary pump for liquefied gases
Assignee: Linde Air Products Co
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Filing: 1947-01-09
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Granted: 1949-04-26
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Expires: 1967-01-09
Abstract
No abstract record available.
Inventors
- 👤 Roger V Carlson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:51
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/04; F04D29/046; F04D29/049; F04D5/00; F04D5/002; F04D5/003; F04D5/006; F16; F16C; F16C33/00; F16C33/30; F16C33/38; F16C33/44; F16C2208/00; F16C2208/80; F16C2208/90; F16C2300/00; F16C2300/40; F16C2300/52; F16C2360/00; F16C2360/44; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49636; Y10T29/49643; Y10T29/49679; Y10T29/49691; Y10T29/4971
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-04-25 | 1952-10-25 | 1953-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-04-25 | 1956-10-25 | 1957-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-04-25 | 1960-10-25 | 1961-04-26 | $7700.00 | Window Closed / Lapsed |