US3549259A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polariscope
Assignee: Automation Industries Inc
•
Filing: 1967-12-12
•
Granted: 1970-12-22
•
Expires: 1987-12-12
Abstract
No abstract record available.
Inventors
- 👤 George A Klatchko
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 16:38
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/17; G01N21/21; G01B; G01B11/00; G01B11/16; G01B11/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2399658A
Cited
GB676725A
Cited
US2730007A
Cited
US3062087A
Cited
US3218912A
Cited
US3177761A
Cited
US3293908A
Cited
US3373652A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-12-21 | 1974-06-22 | 1974-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-21 | 1978-06-22 | 1978-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-21 | 1982-06-22 | 1982-12-22 | $7700.00 | Window Closed / Lapsed |