US1948093A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Insert for cementitious slabs
Assignee: FEDERAL AMERICAN CEMENT TILE C
•
Filing: 1931-09-05
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Granted: 1934-02-20
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Expires: 1951-09-05
Abstract
No abstract record available.
Inventors
- 👤 Virgil E Baird
- 👤 Grifflths Clyde
- 👤 Marais Frank De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:05
CPC Classifications
E; E04; E04B; E04B1/00; E04B1/38; E04B1/41; E04B1/4114; E04B1/4121; E04B2001/4192
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) | 1937-02-19 | 1937-08-21 | 1938-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1941-02-19 | 1941-08-21 | 1942-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1945-02-19 | 1945-08-21 | 1946-02-20 | $7700.00 | Window Closed / Lapsed |