Patent US3434859A successfully refreshed from Google Patents.
US3434859A
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Method for depositing a coating on the internal walls of capillary or small-bore tubes
Assignee: Harshaw Chemicals Ltd
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Filing: 1964-12-29
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Granted: 1969-03-25
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Expires: 1984-12-29
Abstract
No abstract record available.
Inventors
- 👤 Harry Benjamin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:21
CPC Classifications
B; B05; B05D; B05D7/00; B05D7/22; A; A61; A61B; A61B10/00; G; G01; G01N; G01N30/00; G01N30/02; G01N30/50; G01N30/56; G01N31/00; G01N2030/567; G01N30/60; G01N30/6034
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2438561A
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US2538562A
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US3218184A
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US3186860A
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US3291693A
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US3074808A
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US3142579A
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US3248253A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-03-24 | 1972-09-23 | 1973-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-24 | 1976-09-23 | 1977-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-24 | 1980-09-23 | 1981-03-25 | $7700.00 | Window Closed / Lapsed |