US2777536A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water-quench spark arrestor muffler
Assignee: Nelson Muffler Corp
•
Filing: 1953-06-10
•
Granted: 1957-01-15
•
Expires: 1973-06-10
Abstract
No abstract record available.
Inventors
- 👤 Dean G Thomas
- 👤 Richard J Jasensky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:18
CPC Classifications
F; F01; F01N; F01N3/00; F01N3/02; F01N3/04; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12; Y10; Y10S; Y10S55/00; Y10S55/21; Y10S55/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2958A
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US324683A
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US1606032A
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GB189619061A
Cited
US881735A
Cited
US853915A
Cited
US899628A
Cited
US919249A
Cited
US1103995A
Cited
GB191423980A
Cited
GB209874A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-01-15 | 1960-07-16 | 1961-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-15 | 1964-07-16 | 1965-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-15 | 1968-07-16 | 1969-01-15 | $7700.00 | Window Closed / Lapsed |