US3557514A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Interconnected sections and frames made therefrom
Assignee: Rio Tinto Switzerland AG
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Filing: 1968-10-23
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Granted: 1971-01-26
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Expires: 1988-10-23
Abstract
Abstract A COMBINATION OF PARTS FOR ERECTION INTO A FRAME INCLUDES INNER AND OUTER METAL SECTIONS AND AT LEAST ONE CONNECTING ELEMENT SECURED TO THE SECTIONS BY LOCAL DEFORMATION OF THE ELEMENT.
Inventors
- 👤 Walter Fahrni
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:50
CPC Classifications
E; E06; E06B; E06B3/00; E06B3/96; E06B3/964; E06B3/968; E06B3/972; E06B3/9725; E06B3/04; E06B3/263; E06B3/26338; Y; Y10; Y10T; Y10T403/00; Y10T403/55; Y10T403/553
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-25 | 1974-07-27 | 1975-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-25 | 1978-07-27 | 1979-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-25 | 1982-07-27 | 1983-01-26 | $7700.00 | Window Closed / Lapsed |