US838704A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mold for the manufacture of concrete building-blocks.
Assignee: Individual
•
Filing: 1906-01-22
•
Granted: 1906-12-18
•
Expires: 1926-01-22
Abstract
No abstract record available.
Inventors
- 👤 Joseph B Francisco
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:15
CPC Classifications
B; B28; B28B; B28B7/00; B28B7/0029; B28B7/0055; B28B7/08; B28B7/087
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) | 1909-12-17 | 1910-06-18 | 1910-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1913-12-17 | 1914-06-18 | 1914-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1917-12-17 | 1918-06-18 | 1918-12-18 | $7700.00 | Window Closed / Lapsed |