US2424441A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water distributing ferrule for vertical tube heat exchangers
Assignee: Individual
•
Filing: 1944-09-06
•
Granted: 1947-07-22
•
Expires: 1964-09-06
Abstract
No abstract record available.
Inventors
- 👤 Eugene A Edmonds
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:12
CPC Classifications
B; B05; B05B; B05B1/00; B05B1/26; B05B1/262; B05B1/265; F; F28; F28B; F28B9/00; F28B9/04; F28D; F28D3/00; F28D3/04; F28F; F28F25/00; F28F25/02; F28F25/06; F28F9/00
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) | 1950-07-21 | 1951-01-20 | 1951-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-07-21 | 1955-01-20 | 1955-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-07-21 | 1959-01-20 | 1959-07-22 | $7700.00 | Window Closed / Lapsed |