Patent US1911986A successfully refreshed from Google Patents.
US1911986A
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Receiving device for light signals
Assignee: Carl Zeiss SMT GmbH
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Filing: 1931-10-15
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Granted: 1933-05-30
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Expires: 1951-10-15
Abstract
No abstract record available.
Inventors
- 👤 Bischoff Werner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:42
CPC Classifications
B; B61; B61L; B61L3/00; B61L3/02; B61L3/06; B61L3/065; Y; Y10; Y10S; Y10S70/00; Y10S70/51
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) | 1936-05-29 | 1936-11-28 | 1937-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1940-05-29 | 1940-11-28 | 1941-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1944-05-29 | 1944-11-28 | 1945-05-30 | $7700.00 | Window Closed / Lapsed |