US2580076A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composition for making acousting material
Assignee: Individual
•
Filing: 1948-04-29
•
Granted: 1951-12-25
•
Expires: 1968-04-29
Abstract
No abstract record available.
Inventors
- 👤 Deane John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:29
CPC Classifications
C; C04; C04B; C04B28/00; C04B28/02; C04B28/04; C04B26/00; C04B26/02; C04B28/14; C04B2103/00; C04B2103/60; C04B2103/67; C04B2111/00; C04B2111/00474; C04B2111/00482; C04B2111/00577; C04B2111/52
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
GB191474A
Cited
US1598505A
Cited
US1765748A
Cited
US2001916A
Cited
US1977874A
Cited
US1976946A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-12-24 | 1955-06-25 | 1955-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-24 | 1959-06-25 | 1959-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-24 | 1963-06-25 | 1963-12-25 | $7700.00 | Window Closed / Lapsed |