Patent US2527052A successfully refreshed from Google Patents.
US2527052A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spark arresting muffler with retroverted flow
Assignee: Individual
•
Filing: 1947-01-07
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Granted: 1950-10-24
•
Expires: 1967-01-07
Abstract
No abstract record available.
Inventors
- 👤 Beck Raymond
- 👤 Kovner Al
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:41
CPC Classifications
F; F01; F01N; F01N1/00; F01N1/08; F01N1/084
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1318890A
Cited
FR328098A
Cited
US872453A
Cited
GB190603354A
Cited
US1835872A
Cited
US1828110A
Cited
US2122086A
Cited
US2150811A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-10-23 | 1954-04-24 | 1954-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-10-23 | 1958-04-24 | 1958-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-10-23 | 1962-04-24 | 1962-10-24 | $7700.00 | Window Closed / Lapsed |