US2537715A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reinforced wall with ring interlock
Assignee: Individual
•
Filing: 1946-07-22
•
Granted: 1951-01-09
•
Expires: 1966-07-22
Abstract
No abstract record available.
Inventors
- 👤 Stead Rupert George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:51
CPC Classifications
E; E04; E04C; E04C2/00; E04C2/02; E04C2/04; E04C2/06
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
FR34705E
Cited
AT21586B
Cited
US812727A
Cited
GB111557A
Cited
GB234594A
Cited
US2113946A
Cited
US2324326A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-01-08 | 1954-07-10 | 1955-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-01-08 | 1958-07-10 | 1959-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-01-08 | 1962-07-10 | 1963-01-09 | $7700.00 | Window Closed / Lapsed |