Patent US2561406A successfully refreshed from Google Patents.
US2561406A
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US
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Apparatus for inspecting articles with a movable spot of radiant energy
Assignee: Primerica Inc
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Filing: 1949-02-04
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Granted: 1951-07-24
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Expires: 1969-02-04
Abstract
No abstract record available.
Inventors
- 👤 Harold T Odquist
- 👤 Ronald E J Nordquist
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:41
CPC Classifications
G; G01; G01B; G01B11/00; G01B11/24; G01B11/2408; G01N; G01N21/00; G01N21/84; G01N21/88; G01N21/90; G01N21/9018; G01N21/9027
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1546193A
Cited
US1859828A
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US1859597A
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US2184159A
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GB517229A
Cited
US2454412A
Cited
US2454411A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-07-23 | 1955-01-22 | 1955-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-23 | 1959-01-22 | 1959-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-23 | 1963-01-22 | 1963-07-24 | $7700.00 | Window Closed / Lapsed |