Patent US3534787A successfully refreshed from Google Patents.
US3534787A
Expired / Lapsed
US
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Device for sprinkling powder on to supports
Assignee: Duria Werk Karl Kempf GmbH
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Filing: 1968-01-29
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Granted: 1970-10-20
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Expires: 1988-01-29
Abstract
No abstract record available.
Inventors
- 👤 Friedrich Heck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:26
CPC Classifications
C; C23; C23C; C23C24/00; B; B05; B05C; B05C19/00; B05C19/04; B05D; B05D1/00; B05D1/30; B05D2401/00; B05D2401/30; B05D2401/32
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-10-19 | 1974-04-20 | 1974-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-19 | 1978-04-20 | 1978-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-19 | 1982-04-20 | 1982-10-20 | $7700.00 | Window Closed / Lapsed |