US3429602A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Welded light-metal corner construction
Assignee: Rio Tinto Switzerland AG
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Filing: 1968-04-23
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Granted: 1969-02-25
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Expires: 1988-04-23
Abstract
No abstract record available.
Inventors
- 👤 Necdet Dirilgen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:35
CPC Classifications
E; E04; E04B; E04B1/00; E04B1/18; E04B1/24; E04B1/2403; E06; E06B; E06B3/00; E06B3/96; E06B3/9604; E06B3/9608; E04B2001/2415; E04B2001/2448; E04B2001/2466; E04B2001/2475; F; F16; F16B; F16B2200/00; F16B2200/65; Y; Y10; Y10T; Y10T403/00; Y10T403/55; Y10T403/555
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) | 1972-02-25 | 1972-08-26 | 1973-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-25 | 1976-08-26 | 1977-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-25 | 1980-08-26 | 1981-02-25 | $7700.00 | Window Closed / Lapsed |