Patent US3386186A successfully refreshed from Google Patents.
US3386186A
Expired / Lapsed
US
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Apparatus for conducting a gaseous drying medium
Assignee: Robert Hildebrand Maschinenbau GmbH
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Filing: 1966-01-24
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Granted: 1968-06-04
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Expires: 1986-01-24
Abstract
No abstract record available.
Inventors
- 👤 Tiefenbach Johann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 07:11
CPC Classifications
F; F26; F26B; F26B21/00; F26B21/20; F26B21/202; F26B21/208
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) | 1971-06-04 | 1971-12-04 | 1972-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-06-04 | 1975-12-04 | 1976-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-06-04 | 1979-12-04 | 1980-06-04 | $7700.00 | Window Closed / Lapsed |