Patent US3876925A successfully refreshed from Google Patents.
Patent US2855039A successfully refreshed from Google Patents.
US2855039A
Expired / Lapsed
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Sound-absorbent structure
Assignee: Individual
•
Filing: 1953-07-22
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Granted: 1958-10-07
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Expires: 1973-07-22
Abstract
No abstract record available.
Inventors
- 👤 Edward H Gross
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:58
CPC Classifications
E; E04; E04B; E04B1/00; E04B1/62; E04B1/74; E04B1/82; E04B1/8209
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
33 words
SOUND-ABSORPTIVE LOUVER SLAT COMPRISING A CORE OF PLIABLE FOAMED THERMOPLASTIC MATERIAL HAVING A MINOR AXIS THICKNESS OF AT LEAST ABOUT 3/8-INCH AND A CONTINUOUS NONPERFORATED COVERING OF PLIABLE THERMOPLASTIC MATERIAL ENCASING SAID CORE.
Claim 2
Dependent Claim
33 words
SOUND-ABSORPTIVE LOUVER SLAT COMPRISING A CORE OF PLIABLE FOAMED THERMOPLASTIC MATERIAL HAVING A MINOR AXIS THICKNESS OF AT LEAST ABOUT 3/8-INCH AND A CONTINUOUS NONPERFORATED COVERING OF PLIABLE THERMOPLASTIC MATERIAL ENCASING SAID CORE.
References Cited (Backward Citations)
US2160638A
Cited
US2217217A
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US2229225A
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US2230707A
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US2227238A
Cited
US2325003A
Cited
US2341233A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-10-06 | 1962-04-07 | 1962-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-06 | 1966-04-07 | 1966-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-06 | 1970-04-07 | 1970-10-07 | $7700.00 | Window Closed / Lapsed |