US2893101A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Brick press batch distributor
Assignee: Harbison Walker Refractories Co
•
Filing: 1956-07-26
•
Granted: 1959-07-07
•
Expires: 1976-07-26
Abstract
No abstract record available.
Inventors
- 👤 Richard B Britner
- 👤 Lisec Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:45
CPC Classifications
B; B28; B28B; B28B13/00; B28B13/02; B28B13/0215; B28B13/023
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE394144C
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US1184356A
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US1151956A
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GB301650A
Cited
US1967608A
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US2198713A
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US2568332A
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US2534988A
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US2737997A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-07-06 | 1963-01-05 | 1963-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-07-06 | 1967-01-05 | 1967-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-07-06 | 1971-01-05 | 1971-07-07 | $7700.00 | Window Closed / Lapsed |