US2537684A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mold for building blocks
Assignee: Individual
•
Filing: 1949-02-25
•
Granted: 1951-01-09
•
Expires: 1969-02-25
Abstract
No abstract record available.
Inventors
- 👤 Louis W Manuel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:31
CPC Classifications
B; B28; B28B; B28B7/00; B28B7/0029; B28B7/0035; B28B7/0044; B28B7/0064; B28B7/0073
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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 |