US3037468A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary kiln lining block
Assignee: HARBISONWALKER REFRACTORIES Co
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Filing: 1960-10-21
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Granted: 1962-06-05
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Expires: 1980-10-21
Abstract
No abstract record available.
Inventors
- 👤 Snellman Roger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:14
CPC Classifications
F; F27; F27B; F27B7/00; F27B7/20; F27B7/28; F23; F23M; F23M5/00; F23M5/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-06-04 | 1965-12-04 | 1966-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-06-04 | 1969-12-04 | 1970-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-06-04 | 1973-12-04 | 1974-06-05 | $7700.00 | Window Closed / Lapsed |