Patent US2706314A successfully refreshed from Google Patents.
US2706314A
Expired / Lapsed
US
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Sound absorbing wall treatment
Assignee: Johns Manville Corp
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Filing: 1949-03-03
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Granted: 1955-04-19
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Expires: 1969-03-03
Abstract
No abstract record available.
Inventors
- 👤 Robert L Siering
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:12
CPC Classifications
E; E04; E04B; E04B9/00; E04B9/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1113868A
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US1835524A
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FR717866A
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US2112631A
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US2219440A
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GB510109A
Cited
US2293351A
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US2337437A
Cited
US2357560A
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US2486563A
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US2527031A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-04-18 | 1958-10-18 | 1959-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-04-18 | 1962-10-18 | 1963-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-04-18 | 1966-10-18 | 1967-04-19 | $7700.00 | Window Closed / Lapsed |