US2615525A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sound-absorbing board with holes containing debris material
Assignee: Individual
•
Filing: 1947-07-29
•
Granted: 1952-10-28
•
Expires: 1967-07-29
Abstract
No abstract record available.
Inventors
- 👤 Berner Erling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 03:41
CPC Classifications
E; E04; E04B; E04B1/00; E04B1/62; E04B1/74; E04B1/82; E04B1/84; E04B1/86; B; B23; B23B; B23B39/00; B23B39/16; B23B39/161; B23B39/162; E04B2001/8245; E04B2001/8457; E04B2001/8476; E04B2001/848; Y; Y10; Y10T; Y10T408/00; Y10T408/60; Y10T83/00; Y10T83/202; Y10T83/2066; Y10T83/207
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US118806A
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US865249A
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US2096233A
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US2215273A
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US2413568A
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US2412713A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-10-28 | 1956-04-28 | 1956-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-10-28 | 1960-04-28 | 1960-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-10-28 | 1964-04-28 | 1964-10-28 | $7700.00 | Window Closed / Lapsed |