Patent US3535537A successfully refreshed from Google Patents.
US3535537A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optical line splitter having light conducting strips with fused input end and flared output ends
Assignee: United States Department of the Navy
•
Filing: 1968-04-09
•
Granted: 1970-10-20
•
Expires: 1988-04-09
Abstract
No abstract record available.
Inventors
- 👤 William R Powell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:30
CPC Classifications
G; G01; G01J; G01J3/00; G01J3/28; G01J3/30; G01J3/36; G02; G02B; G02B6/00; G02B6/04; G02B6/06
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
DE29800C
Cited
GB470638A
Cited
SU149599A1
Cited
US3177470A
Cited
US3290505A
Cited
US3328589A
Cited
US3428817A
Cited
US3411011A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-10-19 | 1974-04-20 | 1974-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-19 | 1978-04-20 | 1978-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-19 | 1982-04-20 | 1982-10-20 | $7700.00 | Window Closed / Lapsed |