US2251672A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of casting concrete pavements
Assignee: Individual
•
Filing: 1936-06-04
•
Granted: 1941-08-05
•
Expires: 1956-06-04
Abstract
No abstract record available.
Inventors
- 👤 Bengt F Friberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 17:18
CPC Classifications
E; E01; E01C; E01C7/00; E01C7/08; E01C7/10; E01C7/14; E01C7/16; E01C23/00; E01C23/02; E01C23/021; Y; Y10; Y10S; Y10S264/00; Y10S264/43
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1944-08-04 | 1945-02-03 | 1945-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-08-04 | 1949-02-03 | 1949-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-08-04 | 1953-02-03 | 1953-08-05 | $7700.00 | Window Closed / Lapsed |