Patent US3477826A successfully refreshed from Google Patents.
US3477826A
Expired / Lapsed
US
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Acoustic and purifying exhaust muffler
Assignee: GRADY E TAYLOR
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Filing: 1966-01-28
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Granted: 1969-11-11
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Expires: 1986-01-28
Abstract
No abstract record available.
Inventors
- 👤 Ralph H Moyer
- 👤 Grady E Taylor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 20:11
CPC Classifications
F; F01; F01N; F01N3/00; F01N3/02; F01N3/021; F01N3/0215; F01N13/00; F01N13/009; F01N13/0097; F01N13/011; F01N13/017; F01N3/022; F01N3/08; F01N3/10; F01N3/18; F01N3/20; F01N3/2053; F01N3/24; F01N3/28; F01N3/2839; F01N3/285; F01N3/2882; F01N3/2885; F01N1/00; F01N1/08; F01N1/089; F01N1/24; F01N2230/00; F01N2230/04; F01N2260/00; F01N2260/06; F01N2310/00; F01N2310/02; F01N2330/00; F01N2330/10; F01N2410/00; F01N2410/10; F01N2450/00; F01N2450/30; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12; Y10; Y10S; Y10S55/00; Y10S55/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1716479A
Cited
US1824078A
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GB413967A
Cited
US2038313A
Cited
US2942932A
Cited
US3150922A
Cited
US3162516A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-11-10 | 1973-05-12 | 1973-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-10 | 1977-05-12 | 1977-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-10 | 1981-05-12 | 1981-11-11 | $7700.00 | Window Closed / Lapsed |