Patent US2793407A successfully refreshed from Google Patents.
US2793407A
Expired / Lapsed
US
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Interlocking dovetailed connectors
Assignee: Individual
•
Filing: 1953-05-01
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Granted: 1957-05-28
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Expires: 1973-05-01
Abstract
No abstract record available.
Inventors
- 👤 Johnston James William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:22
CPC Classifications
F; F16; F16B; F16B12/00; F16B12/10; F16B12/12; F16B12/20; F16B2200/00; F16B2200/30; Y; Y10; Y10T; Y10T403/00; Y10T403/36; Y10T403/364; Y10T403/70
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) | 1960-05-27 | 1960-11-26 | 1961-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-05-27 | 1964-11-26 | 1965-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-05-27 | 1968-11-26 | 1969-05-28 | $7700.00 | Window Closed / Lapsed |