US3506355A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compact arrangement of two optical objectives for transmitting and receiving radiation
Assignee: Eltro GmbH and Co
•
Filing: 1965-11-08
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Granted: 1970-04-14
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Expires: 1985-11-08
Abstract
No abstract record available.
Inventors
- 👤 Heinrich Nagel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 02:36
CPC Classifications
G; G02; G02B; G02B23/00; G01; G01S; G01S7/00; G01S7/48; G01S7/481; G01S7/4811; G02B13/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1763482A
Cited
US2025892A
Cited
US2109596A
Cited
US2257676A
Cited
US3327585A
Cited
US3405994A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-04-13 | 1973-10-13 | 1974-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-04-13 | 1977-10-13 | 1978-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-04-13 | 1981-10-13 | 1982-04-14 | $7700.00 | Window Closed / Lapsed |