US1758946A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of forming products from cork and the resulting product thereof
Assignee: Armstrong World Industries Inc
•
Filing: 1927-03-25
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Granted: 1930-05-20
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Expires: 1947-03-25
Abstract
No abstract record available.
Inventors
- 👤 William F Grupe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:56
CPC Classifications
B; B27; B27N; B27N3/00; B27N3/08; B27N3/24; B30; B30B; B30B5/00; B30B5/04; B30B5/06
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) | 1933-05-19 | 1933-11-18 | 1934-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1937-05-19 | 1937-11-18 | 1938-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1941-05-19 | 1941-11-18 | 1942-05-20 | $7700.00 | Window Closed / Lapsed |