US2762610A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tube surface cleaning apparatus for tubular heat exchangers
Assignee: Babcock and Wilcox Co
•
Filing: 1952-10-17
•
Granted: 1956-09-11
•
Expires: 1972-10-17
Abstract
No abstract record available.
Inventors
- 👤 Puhr-Westerheide Jurgen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:07
CPC Classifications
F; F28; F28G; F28G1/00; F23; F23J; F23J3/00; F23J3/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1737693A
Cited
US1795348A
Cited
US1871166A
Cited
DE573416C
Cited
US2575058A
Cited
US2665119A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-09-11 | 1960-03-12 | 1960-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-09-11 | 1964-03-12 | 1964-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-09-11 | 1968-03-12 | 1968-09-11 | $7700.00 | Window Closed / Lapsed |