Patent US2740162A successfully refreshed from Google Patents.
US2740162A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Molding of a smooth surfaced reinforced cementitious slab
Assignee: Individual
•
Filing: 1952-11-12
•
Granted: 1956-04-03
•
Expires: 1972-11-12
Abstract
No abstract record available.
Inventors
- 👤 Clarence K Knight
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 06:15
CPC Classifications
C; C04; C04B; C04B28/00; C04B28/02; C04B28/04; C04B2111/00; C04B2111/00241; C04B2111/00336; C04B2111/20; C04B2111/27; C04B2111/34
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US205732A
Cited
US624923A
Cited
US819450A
Cited
US934061A
Cited
US1536729A
Cited
US1539763A
Cited
US1609938A
Cited
US1616977A
Cited
US1778727A
Cited
US2064132A
Cited
US2018192A
Cited
US2066964A
Cited
US2029082A
Cited
US2261638A
Cited
US2321449A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-04-03 | 1959-10-03 | 1960-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-04-03 | 1963-10-03 | 1964-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-04-03 | 1967-10-03 | 1968-04-03 | $7700.00 | Window Closed / Lapsed |