Patent US2806328A successfully refreshed from Google Patents.
US2806328A
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Assignee: Council of Scientific and Industrial Research
•
Filing: 1953-01-29
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Granted: 1957-09-17
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Expires: 1973-01-29
Abstract
No abstract record available.
Inventors
- 👤 Bradfield Geoffrey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:35
CPC Classifications
A; A61; A61C; A61C1/00; A61C1/02; A61C1/07; B; B44; B44B; B44B3/00; B44B3/005
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2651148A
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US2632858A
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US2704333A
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US2680333A
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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) | 1960-09-16 | 1961-03-18 | 1961-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-16 | 1965-03-18 | 1965-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-16 | 1969-03-18 | 1969-09-17 | $7700.00 | Window Closed / Lapsed |