Patent US3721655A successfully refreshed from Google Patents.
Patent US3450393A successfully refreshed from Google Patents.
US3450393A
Expired / Lapsed
US
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Gas and liquid contact apparatus
Assignee: Individual
•
Filing: 1965-06-29
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Granted: 1969-06-17
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Expires: 1985-06-29
Abstract
No abstract record available.
Inventors
- 👤 Carl Georg Munters
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:51
CPC Classifications
F; F28; F28C; F28C1/00; B; B01; B01J; B01J19/00; B01J19/32; F28F; F28F25/00; F28F25/02; F28F25/08; F28F25/087; B01J2219/00; B01J2219/32; B01J2219/322; B01J2219/32203; B01J2219/3221; B01J2219/32213; B01J2219/3222; B01J2219/32224; B01J2219/32227; Y; Y02; Y02B; Y02B30/00; Y02B30/70
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB571510A
Cited
US2490080A
Cited
US2783982A
Cited
US3084918A
Cited
US3243170A
Cited
US3262682A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-16 | 1972-12-16 | 1973-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-16 | 1976-12-16 | 1977-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-16 | 1980-12-16 | 1981-06-17 | $7700.00 | Window Closed / Lapsed |