Patent US2921167A successfully refreshed from Google Patents.
Patent US2645935A successfully refreshed from Google Patents.
US2645935A
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Beam loader apparatus
Assignee: Standard Oil Co
•
Filing: 1950-10-06
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Granted: 1953-07-21
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Expires: 1970-10-06
Abstract
No abstract record available.
Inventors
- 👤 Edward M B Pramuk
- 👤 Frederick H Maclaren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:08
CPC Classifications
G; G01; G01N; G01N3/00; G01N3/08; G01N3/14; G01N2203/00; G01N2203/003; G01N2203/0032; G01N2203/0033; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18888; Y10T74/1892; Y10T74/18944
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US399754A
Cited
US476082A
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US534994A
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US1208748A
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US1827805A
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GB353729A
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US2049644A
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US2001033A
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US2222140A
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US2306111A
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US2354431A
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US2504985A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-07-20 | 1957-01-19 | 1957-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-07-20 | 1961-01-19 | 1961-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-07-20 | 1965-01-19 | 1965-07-21 | $7700.00 | Window Closed / Lapsed |