Patent US2964121A successfully refreshed from Google Patents.
US2964121A
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US
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Muffler for gaseous fuel aspirator
Assignee: Zinklahoma Inc
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Filing: 1958-11-18
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Granted: 1960-12-13
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Expires: 1978-11-18
Abstract
No abstract record available.
Inventors
- 👤 Jr John S Zink
- 👤 Orville P Edwards
- 👤 Robert P Duncan
- 👤 Robert D Reed
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 03:03
CPC Classifications
C; C10; C10J; C10J3/00; C10J3/46; C10J3/48; C10J3/50; C10J3/506; C10J3/72; C10J3/74; C10J3/80; F; F23; F23M; F23M20/00; F23M20/005; G; G10; G10K; G10K11/00; G10K11/16; G10K11/161; C10J2200/00; C10J2200/15; C10J2200/158; C10J2300/00; C10J2300/09; C10J2300/0903; C10J2300/0906; C10J2300/0953; C10J2300/0956
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US381632A
Cited
GB409404A
Cited
GB410721A
Cited
US2412394A
Cited
CH260802A
Cited
US2505854A
Cited
US2670034A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-12-13 | 1964-06-13 | 1964-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-13 | 1968-06-13 | 1968-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-13 | 1972-06-13 | 1972-12-13 | $7700.00 | Window Closed / Lapsed |