US3433218A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Off gas firing system
Assignee: Linde GmbH
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Filing: 1964-07-03
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Granted: 1969-03-18
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Expires: 1984-07-03
Abstract
No abstract record available.
Inventors
- 👤 Peter Von Wiesenthal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:04
CPC Classifications
B; B01; B01D; B01D47/00; B01D47/02; B01D47/021; C; C10; C10G; C10G9/00; C10G9/14; C10G9/18; C10G9/20; F; F23; F23G; F23G7/00; F23G7/06; F23G7/061; F23G7/065
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) | 1972-03-17 | 1972-09-16 | 1973-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-17 | 1976-09-16 | 1977-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-17 | 1980-09-16 | 1981-03-18 | $7700.00 | Window Closed / Lapsed |