US3029484A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sand regenerating and cupola preheating apparatus
Assignee: Individual
•
Filing: 1960-01-04
•
Granted: 1962-04-17
•
Expires: 1980-01-04
Abstract
No abstract record available.
Inventors
- 👤 Kutny Istvan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:26
CPC Classifications
B; B22; B22C; B22C5/00; B22C5/10; F; F27; F27B; F27B15/00; Y; Y10; Y10S; Y10S266/00; Y10S266/90
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CA518640A
Cited
CA539527A
Cited
US2533142A
Cited
US2478461A
Cited
US2714237A
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US2794631A
Cited
US2863190A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-04-16 | 1965-10-16 | 1966-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-04-16 | 1969-10-16 | 1970-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-04-16 | 1973-10-16 | 1974-04-17 | $7700.00 | Window Closed / Lapsed |