Patent US3428338A successfully refreshed from Google Patents.
US3428338A
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US
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Mechanical joint and method of making same
Assignee: Vernon Tool Co Ltd
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Filing: 1966-08-22
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Granted: 1969-02-18
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Expires: 1986-08-22
Abstract
No abstract record available.
Inventors
- 👤 Harry L Corwin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:07
CPC Classifications
B; B21; B21D; B21D39/00; B21D39/06; F; F16; F16L; F16L41/00; F16L41/001; F22; F22G; F22G3/00; F22G3/009; F28; F28F; F28F9/00; F28F9/02; F28F9/04; F28F9/16; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/4935; Y10T29/49373; Y10T29/49375; Y10T29/49826; Y10T29/49908; Y10T29/49938; Y10T29/4994; Y10T29/49945
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-02-18 | 1972-08-19 | 1973-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-18 | 1976-08-19 | 1977-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-18 | 1980-08-19 | 1981-02-18 | $7700.00 | Window Closed / Lapsed |