US3362078A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and apparatus for the drying and heating of gravel and crushed stone
Assignee: Essener Teerschotter GmbH
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Filing: 1966-04-25
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Granted: 1968-01-09
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Expires: 1986-04-25
Abstract
No abstract record available.
Inventors
- 👤 Kamper Erich
- 👤 Gulden Heinrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 02:18
CPC Classifications
E; E01; E01C; E01C19/00; E01C19/02; E01C19/05; F; F26; F26B; F26B17/00; F26B17/02; F26B17/04; F26B3/00; F26B3/18; F26B3/22
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) | 1971-01-08 | 1971-07-10 | 1972-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-01-08 | 1975-07-10 | 1976-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-01-08 | 1979-07-10 | 1980-01-09 | $7700.00 | Window Closed / Lapsed |