Patent US2950776A successfully refreshed from Google Patents.
US2950776A
Expired / Lapsed
US
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Ventilating air discharge muffler
Assignee: Gustin Bacon Manufacturing Co
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Filing: 1956-07-19
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Granted: 1960-08-30
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Expires: 1976-07-19
Abstract
No abstract record available.
Inventors
- 👤 Joseph F Stephens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:48
CPC Classifications
F; F24; F24F; F24F13/00; F24F13/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR472605A
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US1173583A
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US1938798A
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US1929595A
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US2091918A
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US2075316A
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FR813127A
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US2214467A
Cited
US2270825A
Cited
US2502020A
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US2759556A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-30 | 1964-02-29 | 1964-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-30 | 1968-02-29 | 1968-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-30 | 1972-02-29 | 1972-08-30 | $7700.00 | Window Closed / Lapsed |