Patent US2857666A successfully refreshed from Google Patents.
US2857666A
Expired / Lapsed
US
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Making coupling assemblies
Assignee: Individual
•
Filing: 1953-12-03
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Granted: 1958-10-28
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Expires: 1973-12-03
Abstract
No abstract record available.
Inventors
- 👤 Walter O Beyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:47
CPC Classifications
B; B21; B21D; B21D39/00; B21D39/04; F; F16; F16L; F16L17/00; F16L17/02; F16L17/03; F16L17/035; F16L37/00; F16L37/08; F16L37/084; F16L37/092; F16L37/50; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49908; Y10T29/49915; Y10T29/4992; Y10T29/49938; Y10T29/4994; Y10T29/49945
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) | 1961-10-27 | 1962-04-28 | 1962-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-27 | 1966-04-28 | 1966-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-27 | 1970-04-28 | 1970-10-28 | $7700.00 | Window Closed / Lapsed |