Patent US3057033A successfully refreshed from Google Patents.
US3057033A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Equipment for manufacturing structural blocks
Assignee: Individual
•
Filing: 1960-03-29
•
Granted: 1962-10-09
•
Expires: 1980-03-29
Abstract
No abstract record available.
Inventors
- 👤 Valdemar P Russell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 09:46
CPC Classifications
B; B28; B28B; B28B3/00; B28B3/02; B28B3/021; B28B3/022; B28B7/00; B28B7/0064
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1473200A
Cited
US1570595A
Cited
US1593831A
Cited
DE605013C
Cited
US2151244A
Cited
US2911701A
Cited
US2887755A
Cited
FR1127381A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-10-08 | 1966-04-09 | 1966-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-08 | 1970-04-09 | 1970-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-08 | 1974-04-09 | 1974-10-09 | $7700.00 | Window Closed / Lapsed |