US2858119A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas-liquid reactor
Assignee: BC Research (Canada)
•
Filing: 1955-07-01
•
Granted: 1958-10-28
•
Expires: 1975-07-01
Abstract
No abstract record available.
Inventors
- 👤 Robert H Wright
- 👤 Ronald W Klinck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:07
CPC Classifications
B; B01; B01D; B01D47/00; Y; Y10; Y10S; Y10S261/00; Y10S261/44
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-10-27 | 1962-04-28 | 1962-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-27 | 1966-04-28 | 1966-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-27 | 1970-04-28 | 1970-10-28 | $7700.00 | Window Closed / Lapsed |