US2472221A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Erection of brickwork structures
Assignee: Individual
•
Filing: 1945-07-23
•
Granted: 1949-06-07
•
Expires: 1965-07-23
Abstract
No abstract record available.
Inventors
- 👤 Malthouse Ernest Goodall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 10:24
CPC Classifications
E; E04; E04C; E04C2/00; E04C2/02; E04C2/04; E04C2/041; E04C2002/001; E04C2002/004
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1447267A
Cited
US952918A
Cited
US860927A
Cited
US1011283A
Cited
US1440366A
Cited
US1637657A
Cited
US2105613A
Cited
US2239989A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-06-06 | 1952-12-06 | 1953-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-06-06 | 1956-12-06 | 1957-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-06-06 | 1960-12-06 | 1961-06-07 | $7700.00 | Window Closed / Lapsed |