US2686950A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable mix feeding means for block molding machines
Assignee: WASHINGTON BRICK CO
•
Filing: 1951-01-02
•
Granted: 1954-08-24
•
Expires: 1971-01-02
Abstract
No abstract record available.
Inventors
- 👤 Thomas K Zevely
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:57
CPC Classifications
B; B28; B28B; B28B13/00; B28B13/02; B28B13/021; B28B13/0215; B28B13/023
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US289397A
Cited
US835737A
Cited
US876388A
Cited
FR458485A
Cited
US2208054A
Cited
US2242690A
Cited
US2589115A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-08-23 | 1958-02-22 | 1958-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-08-23 | 1962-02-22 | 1962-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-08-23 | 1966-02-22 | 1966-08-24 | $7700.00 | Window Closed / Lapsed |