US2943531A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photoelectric inspection apparatus
Assignee: U D ENGINEERING Co Ltd
•
Filing: 1958-02-14
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Granted: 1960-07-05
•
Expires: 1978-02-14
Abstract
No abstract record available.
Inventors
- 👤 Bentley Lawrence Cranmer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:42
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/84; G01N21/88; G01N21/90; G01N21/9018; C; C25; C25B; C25B1/00; G01N33/00; G01N33/0078; G01N33/0081
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-07-05 | 1964-01-04 | 1964-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-07-05 | 1968-01-04 | 1968-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-07-05 | 1972-01-04 | 1972-07-05 | $7700.00 | Window Closed / Lapsed |