Patent US2740000A successfully refreshed from Google Patents.
US2740000A
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US
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Coupling for preventing electrolytic corrosion
Assignee: Individual
•
Filing: 1950-05-25
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Granted: 1956-03-27
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Expires: 1970-05-25
Abstract
No abstract record available.
Inventors
- 👤 Wierk Frederick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:56
CPC Classifications
F; F16; F16G; F16G15/00; F16G15/08; B; B63; B63B; B63B59/00; B63B59/04; F16G11/00; Y; Y10; Y10T; Y10T403/00; Y10T403/32; Y10T403/32975; Y10T403/32983
Claims Analysis
Total Claims: 0
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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) | 1959-03-27 | 1959-09-26 | 1960-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-03-27 | 1963-09-26 | 1964-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-03-27 | 1967-09-26 | 1968-03-27 | $7700.00 | Window Closed / Lapsed |