Patent US2954838A successfully refreshed from Google Patents.
US2954838A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sound deadening or absorbing wallboard
Assignee: Swedish Match AB
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Filing: 1956-05-08
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Granted: 1960-10-04
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Expires: 1976-05-08
Abstract
No abstract record available.
Inventors
- 👤 Nuorivaara Zachris Enzi Mikael
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:58
CPC Classifications
E; E04; E04B; E04B1/00; E04B1/62; E04B1/74; E04B1/82; E04B1/84; E04B1/86; E04B2001/8414; E04B2001/8457; E04B2001/8461; E04B2001/8476; E04B2001/848; E04B2001/8495
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1781797A
Cited
DE642722C
Cited
US2113128A
Cited
US2187335A
Cited
US2550455A
Cited
DE816594C
Cited
US2652878A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-10-04 | 1964-04-04 | 1964-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-10-04 | 1968-04-04 | 1968-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-10-04 | 1972-04-04 | 1972-10-04 | $7700.00 | Window Closed / Lapsed |