US3132715A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Noise reducing enclosures
Assignee: Ferranti International PLC
•
Filing: 1962-05-18
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Granted: 1964-05-12
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Expires: 1982-05-18
Abstract
No abstract record available.
Inventors
- 👤 Dunsbee John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:48
CPC Classifications
G; G10; G10K; G10K11/00; G10K11/16; G10K11/172; H; H01; H01F; H01F27/00; H01F27/33
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
34 words
A NOISE REDUCING ENCLOSURE FOR A NOISE SOURCE HAVING INCLUDED THEREIN AT LEAST ONE RESONANT ABSORBER COMPRISING A SINGLE MASS SIDE, SAID ABSORBER BEING TUNED TO INCLUDE THE OBJECTIONABLE FREQUENCIES OF THE NOISE SOURCE,
Claim 2
Dependent Claim
34 words
A NOISE REDUCING ENCLOSURE FOR A NOISE SOURCE HAVING INCLUDED THEREIN AT LEAST ONE RESONANT ABSORBER COMPRISING A SINGLE MASS SIDE, SAID ABSORBER BEING TUNED TO INCLUDE THE OBJECTIONABLE FREQUENCIES OF THE NOISE SOURCE,
References Cited (Backward Citations)
US2045312A
Cited
US2081952A
Cited
US2123358A
Cited
GB495755A
Cited
US2502016A
Cited
US2619685A
Cited
US2808122A
Cited
FR1150315A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-05-12 | 1967-11-11 | 1968-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-12 | 1971-11-11 | 1972-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-12 | 1975-11-11 | 1976-05-12 | $7700.00 | Window Closed / Lapsed |