US3509344A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device with a night telescope
Assignee: Optische Industrie de Oude Delft NV
•
Filing: 1967-05-17
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Granted: 1970-04-28
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Expires: 1987-05-17
Abstract
No abstract record available.
Inventors
- 👤 Albert Bouwers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:09
CPC Classifications
G; G02; G02B; G02B23/00; G02B23/12; H; H01; H01J; H01J31/00; H01J31/08; H01J31/50; H01J2231/00; H01J2231/50; H01J2231/50005; H01J2231/5001; H01J2231/50015; H01J2231/50026
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3124682A
Cited
US2605335A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-04-27 | 1973-10-27 | 1974-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-04-27 | 1977-10-27 | 1978-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-04-27 | 1981-10-27 | 1982-04-28 | $7700.00 | Window Closed / Lapsed |