US3470062A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ceramic acoustical water-laid sheet
Assignee: Armstrong World Industries Inc
•
Filing: 1967-10-04
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Granted: 1969-09-30
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Expires: 1987-10-04
Abstract
No abstract record available.
Inventors
- 👤 James C Ollinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:23
CPC Classifications
D; D21; D21H; D21H5/00; D21H5/12; D21H5/18; D21H13/00; D21H13/36; D21H13/38; D21H13/40
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3014835A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-29 | 1973-03-31 | 1973-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-29 | 1977-03-31 | 1977-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-29 | 1981-03-31 | 1981-09-30 | $7700.00 | Window Closed / Lapsed |