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US937834A
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Assignee: Co EMIL BUSCH ACTIENGESELLSCHAFT OPTISCHE INDUSTRIE
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Filing: 1909-01-11
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Granted: 1909-10-26
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Expires: 1929-01-11
Abstract
No abstract record available.
Inventors
- 👤 Karl Martin
- 👤 Georg Stiege
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:44
CPC Classifications
G; G02; G02B; G02B7/00; G02B7/02; G02B7/04; G02B7/06
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) | 1912-10-25 | 1913-04-26 | 1913-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1916-10-25 | 1917-04-26 | 1917-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1920-10-25 | 1921-04-26 | 1921-10-26 | $7700.00 | Window Closed / Lapsed |