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US727962A
Expired / Lapsed
US
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Azo dye.
Assignee: FARBENFABRIKEN OF ELBERFELD Co
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Filing: 1903-02-16
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Granted: 1903-05-12
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Expires: 1923-02-16
Abstract
No abstract record available.
Inventors
- 👤 Myrtil Kahn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:03
CPC Classifications
C; C09; C09B; C09B45/00; C09B45/02; C09B45/14; C09B45/16
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) | 1906-05-11 | 1906-11-10 | 1907-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1910-05-11 | 1910-11-10 | 1911-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1914-05-11 | 1914-11-10 | 1915-05-12 | $7700.00 | Window Closed / Lapsed |