US2625709A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for intensely working plastic materials
Assignee: Armstrong World Industries Inc
•
Filing: 1948-10-29
•
Granted: 1953-01-20
•
Expires: 1968-10-29
Abstract
No abstract record available.
Inventors
- 👤 Edward G Schairer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:28
CPC Classifications
B; B29; B29B; B29B7/00; B29B7/002; B29B7/007; B29B7/30; B29B7/58; B29B7/584
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-01-20 | 1956-07-21 | 1957-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-01-20 | 1960-07-21 | 1961-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-01-20 | 1964-07-21 | 1965-01-20 | $7700.00 | Window Closed / Lapsed |