US1642989A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compressed-cork article and method of making the same
Assignee: Armstrong World Industries Inc
•
Filing: 1926-04-28
•
Granted: 1927-09-20
•
Expires: 1946-04-28
Abstract
No abstract record available.
Inventors
- 👤 Herman F Busch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:22
CPC Classifications
B; B27; B27J; B27J5/00; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49453
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1930-09-19 | 1931-03-21 | 1931-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1934-09-19 | 1935-03-21 | 1935-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1938-09-19 | 1939-03-21 | 1939-09-20 | $7700.00 | Window Closed / Lapsed |