Patent US3477085A successfully refreshed from Google Patents.
US3477085A
Expired / Lapsed
US
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Soot blowing devices
Assignee: FOREST INTERNATIONAL SA
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Filing: 1966-09-19
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Granted: 1969-11-11
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Expires: 1986-09-19
Abstract
No abstract record available.
Inventors
- 👤 Jean Eugene Julien Dulait
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:28
CPC Classifications
F; F28; F28G; F28G15/00; F28G15/04; F28G9/00
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) | 1972-11-10 | 1973-05-12 | 1973-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-10 | 1977-05-12 | 1977-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-10 | 1981-05-12 | 1981-11-11 | $7700.00 | Window Closed / Lapsed |