US2585548A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Closure for exhaust pipes
Assignee: Waterloo Foundry Co Inc
•
Filing: 1948-11-20
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Granted: 1952-02-12
•
Expires: 1968-11-20
Abstract
No abstract record available.
Inventors
- 👤 Harmon Cline Harry
- 👤 Dorathea L Fort
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:01
CPC Classifications
F; F01; F01N; F01N13/00; F01N13/08; F01N13/085
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) | 1955-02-11 | 1955-08-13 | 1956-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-02-11 | 1959-08-13 | 1960-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-02-11 | 1963-08-13 | 1964-02-12 | $7700.00 | Window Closed / Lapsed |