US2887927A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optical control instrument
Assignee: Specialties Inc
•
Filing: 1953-01-21
•
Granted: 1959-05-26
•
Expires: 1973-01-21
Abstract
No abstract record available.
Inventors
- 👤 John C Newton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:52
CPC Classifications
G; G02; G02B; G02B27/00; G02B27/01; G02B27/0149; G02B27/0101; G03; G03B; G03B21/00; G02B2027/0154; G02B2027/0169
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1760163A
Cited
DE666562C
Cited
US2464195A
Cited
US2391357A
Cited
US2316466A
Cited
US2406828A
Cited
US2684007A
Cited
US2577785A
Cited
US2537996A
Cited
US2613252A
Cited
US2613350A
Cited
US2694869A
Cited
US2685226A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-05-25 | 1962-11-24 | 1963-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-25 | 1966-11-24 | 1967-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-25 | 1970-11-24 | 1971-05-26 | $7700.00 | Window Closed / Lapsed |