US3401533A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas liquefiers
Assignee: The Hymatic Engineering Co Ltd
•
Filing: 1966-03-10
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Granted: 1968-09-17
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Expires: 1986-03-10
Abstract
No abstract record available.
Inventors
- 👤 Maybury Alan Bradley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:27
CPC Classifications
F; F25; F25B; F25B9/00; F25B9/02; F25J; F25J1/00; F25J1/0002; F25J1/0005; F25J1/001; F25J1/003; F25J1/0032; F25J1/004; F25J1/006; F25J1/007; F25J1/0072; F25J1/02; F25J1/0203; F25J1/0204; F25J1/0243; F25J1/0257; F25J1/0275; F25J1/0276; F25B2309/00; F25B2309/02; F25B2309/022; F25B2309/023; F25J2240/00; F25J2240/40; F25J2290/00; F25J2290/42
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) | 1971-09-17 | 1972-03-18 | 1972-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-09-17 | 1976-03-18 | 1976-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-09-17 | 1980-03-18 | 1980-09-17 | $7700.00 | Window Closed / Lapsed |