US2667679A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for molding building blocks
Assignee: Individual
•
Filing: 1949-06-01
•
Granted: 1954-02-02
•
Expires: 1969-06-01
Abstract
No abstract record available.
Inventors
- 👤 Frederick H Jackman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 02:29
CPC Classifications
B; B28; B28B; B28B3/00; B28B3/02; B28B3/022
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1796636A
Cited
US960958A
Cited
US1280269A
Cited
US2275676A
Cited
US2366780A
Cited
US2309033A
Cited
US2319291A
Cited
US2296562A
Cited
US2311358A
Cited
US2296453A
Cited
US2505342A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-02-01 | 1957-08-03 | 1958-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-02-01 | 1961-08-03 | 1962-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-02-01 | 1965-08-03 | 1966-02-02 | $7700.00 | Window Closed / Lapsed |