Patent US3901400A successfully refreshed from Google Patents.
Patent US2696016A successfully refreshed from Google Patents.
US2696016A
Expired / Lapsed
US
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Retractable soot blower
Assignee: Diamond Power Specialty Corp
•
Filing: 1950-04-11
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Granted: 1954-12-07
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Expires: 1970-04-11
Abstract
No abstract record available.
Inventors
- 👤 Mart Le Roy S De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:02
CPC Classifications
F; F23; F23J; F23J3/00; F28; F28G; F28G1/00; F28G1/16; F28G1/166
Claims Analysis
Total Claims: 0
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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) | 1957-12-06 | 1958-06-07 | 1958-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-12-06 | 1962-06-07 | 1962-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-12-06 | 1966-06-07 | 1966-12-07 | $7700.00 | Window Closed / Lapsed |