US1760780A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light-sensitive layers and process of preparing them
Assignee: Kalle GmbH and Co KG
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Filing: 1928-08-07
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Granted: 1930-05-27
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Expires: 1948-08-07
Abstract
No abstract record available.
Inventors
- 👤 Schmidt Maximilian Paul
- 👤 Krieger Wilhelm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:40
CPC Classifications
—
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) | 1933-05-26 | 1933-11-25 | 1934-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1937-05-26 | 1937-11-25 | 1938-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1941-05-26 | 1941-11-25 | 1942-05-27 | $7700.00 | Window Closed / Lapsed |