US2962264A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means for cleaning heating surfaces in economizers and similar equipment
Assignee: K E PATENTER AB
•
Filing: 1957-03-22
•
Granted: 1960-11-29
•
Expires: 1977-03-22
Abstract
No abstract record available.
Inventors
- 👤 Enerus Erik Oskar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:16
CPC Classifications
F; F28; F28G; F28G3/00; F28G3/16; F23; F23J; F23J3/00; F23J3/02; F28G1/00; F28G1/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1904292A
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US2210486A
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US2183496A
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US2325715A
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US2564983A
Cited
US2762610A
Cited
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US2785013A
Cited
US2819788A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-11-29 | 1964-05-30 | 1964-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-29 | 1968-05-30 | 1968-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-29 | 1972-05-30 | 1972-11-29 | $7700.00 | Window Closed / Lapsed |