Patent US3508541A successfully refreshed from Google Patents.
US3508541A
Expired / Lapsed
US
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Electrode construction
Assignee: National Aeronautics and Space Administration
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Filing: 1967-10-16
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Granted: 1970-04-28
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Expires: 1987-10-16
Abstract
No abstract record available.
Inventors
- 👤 Richard M Westbrook
- 👤 Joseph J Zuccaro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:45
CPC Classifications
A; A61; A61N; A61N1/00; A61N1/02; A61N1/04; A61B; A61B5/00; A61B5/24; A61B5/25; A61B5/279; A61B5/291; A61B2562/00; A61B2562/02; A61B2562/0209; A61B2562/0215; A61B2562/0217
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2621657A
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US3029808A
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US2872926A
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US3170459A
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US3387608A
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US3411495A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-04-27 | 1973-10-27 | 1974-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-04-27 | 1977-10-27 | 1978-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-04-27 | 1981-10-27 | 1982-04-28 | $7700.00 | Window Closed / Lapsed |