Patent US2736541A successfully refreshed from Google Patents.
US2736541A
Expired / Lapsed
US
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Spark arrester
Assignee: Individual
•
Filing: 1949-12-01
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Granted: 1956-02-28
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Expires: 1969-12-01
Abstract
No abstract record available.
Inventors
- 👤 Maiman Herbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 06:35
CPC Classifications
F; F23; F23J; F23J15/00; F23J15/02; F23J15/04; B; B61; B61C; B61C17/00; B61C17/04; Y; Y10; Y10S; Y10S55/00; Y10S55/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US587425A
Cited
US1606032A
Cited
US679666A
Cited
AT12624B
Cited
US1009963A
Cited
US1570577A
Cited
US2380826A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-02-27 | 1959-08-29 | 1960-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-02-27 | 1963-08-29 | 1964-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-02-27 | 1967-08-29 | 1968-02-28 | $7700.00 | Window Closed / Lapsed |