US2593022A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Concrete reinforcement anchorage
Assignee: Richmond Screw Anchor Co Inc
•
Filing: 1948-11-15
•
Granted: 1952-04-15
•
Expires: 1968-11-15
Abstract
No abstract record available.
Inventors
- 👤 Grivel Armand Charles
- 👤 Alan H Pilling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 08:32
CPC Classifications
E; E04; E04C; E04C5/00; E04C5/08; E04C5/12; Y; Y10; Y10S; Y10S411/00; Y10S411/955; Y10S411/965
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US799510A
Cited
US1756187A
Cited
US2057328A
Cited
US2133553A
Cited
US2100614A
Cited
US2486527A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-04-15 | 1955-10-15 | 1956-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-15 | 1959-10-15 | 1960-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-15 | 1963-10-15 | 1964-04-15 | $7700.00 | Window Closed / Lapsed |