Patent US3210450A successfully refreshed from Google Patents.
US3210450A
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Machine and method for making perforated brick
Assignee: Harbison Walker Refractories Co
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Filing: 1964-03-10
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Granted: 1965-10-05
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Expires: 1984-03-10
Abstract
No abstract record available.
Inventors
- 👤 Richard E Bratton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 07:25
CPC Classifications
B; B28; B28B; B28B7/00; B28B7/16; B28B7/18; B28B7/183; B28B1/00; B28B1/44
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
123 words
IN METHODS OF FABRICATING APERTURED BODIES FROM UNCONSOLIDATED GRANULAR BRICKMAKING MATERIAL IN WHICH SAID MATERIAL IS DELIVERED TO A BRICKMAKING CAVITY AND A PAIR OF OPPOSED DIES ARE RECIPROCALLY MOVABLE WITHIN THE CONFINES OF SAID CAVITY TO COMPRESS MATERIAL DEPOSITED THEREIN TO MAKE SELF-SUSTAINING BODIES, AND IN WHICH A PLURALITY OF PINS ARE USED TO MAKE PASSAGES THROUGH THE BODIES, AND IN WHICH THE PINS ARE MOVED THROUGH THE UNCONSOLIDATED MATIERL DEPOSITED IN SAID CAVITY TO PUSH QUANTITIES OF SAID UNCONSOLIDATED MATERIAL FROM THE CAVITY TO THE TOP THEROF TO FORM A PLURALITY OF PASSAGES THERETHROUGH, AND THE TOP OF THE MATERIAL REMAINING IN THE CAVITY IS LEVELED TO EVENLY DISTRIBUTE UNCONSOLIDATED MATERIAL ABOUT SAID PINS WITHIN THE CAVITY, ALL PRIOR TO COM-
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-10-04 | 1969-04-05 | 1969-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-04 | 1973-04-05 | 1973-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-04 | 1977-04-05 | 1977-10-05 | $7700.00 | Window Closed / Lapsed |