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Patent US3490755A successfully refreshed from Google Patents.
US3490755A
Expired / Lapsed
US
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High-temperature device for the injection of fluids
Assignee: Air Liquide SA
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Filing: 1967-06-12
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Granted: 1970-01-20
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Expires: 1987-06-12
Abstract
No abstract record available.
Inventors
- 👤 Noel Lutgen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 06:57
CPC Classifications
C; C21; C21C; C21C5/00; C21C5/28; C21C5/42; C21C5/46; C21C5/48; B; B22; B22D; B22D1/00; B22D1/002; B22D1/005
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2811346A
Cited
US3330645A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-01-19 | 1973-07-21 | 1974-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-19 | 1977-07-21 | 1978-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-19 | 1981-07-21 | 1982-01-20 | $7700.00 | Window Closed / Lapsed |