Patent US2823301A successfully refreshed from Google Patents.
US2823301A
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Inspection apparatus with constant high intensity light
Assignee: Timken Co
•
Filing: 1952-07-01
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Granted: 1958-02-11
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Expires: 1972-07-01
Abstract
No abstract record available.
Inventors
- 👤 Samuel N Stevens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:03
CPC Classifications
H; H05; H05B; H05B39/00; H05B39/04; H05B39/041; H05B39/042; Y; Y02; Y02B; Y02B20/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2269324A
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US2246501A
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US2242638A
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US2407564A
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US2451501A
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US2433624A
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US2537914A
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US2607899A
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US2567896A
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US2573554A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-02-10 | 1961-08-12 | 1962-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-02-10 | 1965-08-12 | 1966-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-02-10 | 1969-08-12 | 1970-02-11 | $7700.00 | Window Closed / Lapsed |