Patent US2909598A successfully refreshed from Google Patents.
US2909598A
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Producing printing plates with selectively variable reproduction scale
Assignee: Dr Ing Rudolf Hell GmbH
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Filing: 1956-07-03
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Granted: 1959-10-20
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Expires: 1976-07-03
Abstract
No abstract record available.
Inventors
- 👤 Lifferth Ewald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:53
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/387; H04N1/393
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) | 1962-10-19 | 1963-04-20 | 1963-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-19 | 1967-04-20 | 1967-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-19 | 1971-04-20 | 1971-10-20 | $7700.00 | Window Closed / Lapsed |