US3033307A
Expired / Lapsed
US
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Noise attenuating apparatus
Assignee: Industrial Acoustics Co Inc
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Filing: 1959-10-06
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Granted: 1962-05-08
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Expires: 1979-10-06
Abstract
No abstract record available.
Inventors
- 👤 Guy J Sanders
- 👤 Charles N Rink
- 👤 Oppenheim Arthur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:23
CPC Classifications
F; F01; F01N; F01N1/00; F01N1/24; B; B64; B64F; B64F1/00; B64F1/26; F01N1/02; F01N1/04; F01N1/08; F01N1/10; F02; F02K; F02K1/00; F02K1/78; F02K1/82; F02K1/827; F04; F04B; F04B39/00; F04B39/0027; F04B39/005; F04D; F04D29/00; F04D29/66; F04D29/661; F04D29/663; F04D29/664; F16; F16L; F16L55/00; F16L55/02; F16L55/027; F16L55/02754; F01N2490/00; F01N2490/15; F01N2490/155; F01N2490/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-05-07 | 1965-11-06 | 1966-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-05-07 | 1969-11-06 | 1970-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-05-07 | 1973-11-06 | 1974-05-08 | $7700.00 | Window Closed / Lapsed |