US3118658A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for manufacturing a porous material such as blown clay, by heating
Assignee: Veit Dennert KG
•
Filing: 1961-01-17
•
Granted: 1964-01-21
•
Expires: 1981-01-17
Abstract
No abstract record available.
Inventors
- 👤 Dennert Heinz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 02:39
CPC Classifications
C; C04; C04B; C04B20/00; C04B20/02; C04B20/04; C04B20/06; C04B20/065; Y; Y10; Y10S; Y10S159/00; Y10S159/03; Y10S264/00; Y10S264/50
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2670193A
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US2666632A
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US2684840A
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US2774661A
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US2853241A
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US2874950A
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US2871004A
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US2833622A
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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) | 1967-01-20 | 1967-07-22 | 1968-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-01-20 | 1971-07-22 | 1972-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-01-20 | 1975-07-22 | 1976-01-21 | $7700.00 | Window Closed / Lapsed |