US2475781A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making construction material
Assignee: Ruberoid Co
•
Filing: 1944-04-20
•
Granted: 1949-07-12
•
Expires: 1964-04-20
Abstract
No abstract record available.
Inventors
- 👤 Braxton E Gallup
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:37
CPC Classifications
C; C04; C04B; C04B28/00; C04B28/24; C04B28/26; C04B2111/00; C04B2111/00474; C04B2111/00482; Y; Y10; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249967; Y10T428/249969; Y10T428/25; Y10T428/31504; Y10T428/31652; Y10T428/31815; Y10T428/31819; Y10T428/31823; Y10T442/00; Y10T442/50; Y10T442/51; Y10T442/53
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1655718A
Cited
US1171236A
Cited
US1344324A
Cited
US1491112A
Cited
US1738906A
Cited
US1874674A
Cited
US1744378A
Cited
US1847366A
Cited
US1977669A
Cited
US2047016A
Cited
US2035122A
Cited
FR776920A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-07-11 | 1953-01-10 | 1953-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-07-11 | 1957-01-10 | 1957-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-07-11 | 1961-01-10 | 1961-07-12 | $7700.00 | Window Closed / Lapsed |