Patent US2998036A successfully refreshed from Google Patents.
US2998036A
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Apparatus for packing powders into vessels having long narrow cavities, more especially cavity electrodes for spectrochemical analysis
Assignee: SOUTH AFRICAN COUNCIL FOR SCIENTIFIC AND INDUSTRIAL RESEARCH
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Filing: 1958-08-20
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Granted: 1961-08-29
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Expires: 1978-08-20
Abstract
No abstract record available.
Inventors
- 👤 Strasheim Albertus
- 👤 Tappere Eric James
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:29
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/62; G01N21/66; G01N21/67
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE176155C
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US261941A
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US641546A
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US2379230A
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US2353492A
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US2437205A
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US2395898A
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US2515323A
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US2718990A
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US2924253A
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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) | 1964-08-28 | 1965-02-27 | 1965-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-28 | 1969-02-27 | 1969-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-28 | 1973-02-27 | 1973-08-29 | $7700.00 | Window Closed / Lapsed |