Patent US2567070A successfully refreshed from Google Patents.
US2567070A
Expired / Lapsed
US
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Sound absorbing fibrous material for covering the walls or ceilings of rooms
Assignee: Individual
•
Filing: 1948-03-22
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Granted: 1951-09-04
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Expires: 1968-03-22
Abstract
No abstract record available.
Inventors
- 👤 Hjartsater Jacob Johansson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:00
CPC Classifications
E; E04; E04B; E04B1/00; E04B1/62; E04B1/74; E04B1/82; E04B1/84; E04B1/8409; E04B2001/8457; E04B2001/8476; E04B2001/848; E04B2001/849; E04B2001/8495
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US964221A
Cited
US1875074A
Cited
US1845080A
Cited
GB408001A
Cited
CH197028A
Cited
US2413568A
Cited
US2459121A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-09-03 | 1955-03-05 | 1955-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-09-03 | 1959-03-05 | 1959-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-09-03 | 1963-03-05 | 1963-09-04 | $7700.00 | Window Closed / Lapsed |