US3848043A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making cut-in-register ceiling tile
Assignee: Armstrong World Industries Inc
•
Filing: 1973-04-17
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Granted: 1974-11-12
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Expires: 1993-04-17
Abstract
Abstract NO O.G. CLAIM/ABSTRACT AVAILABLE IN IFI DATABASE FOR THIS PATENT
Inventors
- 👤 J Garrick
- 👤 E Waters
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:22
CPC Classifications
B; B28; B28B; B28B11/00; B28B11/08; B28B11/10; B44; B44C; B44C1/00; B44C1/24; B44F; B44F3/00; E; E04; E04B; E04B9/00; E04B9/04; Y; Y10; Y10T; Y10T428/00; Y10T428/16; Y10T428/163
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-11-11 | 1978-05-13 | 1978-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-11 | 1982-05-13 | 1982-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-11 | 1986-05-13 | 1986-11-12 | $7700.00 | Window Closed / Lapsed |