Patent US3490189A successfully refreshed from Google Patents.
US3490189A
Expired / Lapsed
US
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Scaffold element for use in the construction of scaffolding structures
Assignee: RMD Kwikform Ltd
•
Filing: 1967-12-06
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Granted: 1970-01-20
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Expires: 1987-12-06
Abstract
No abstract record available.
Inventors
- 👤 Peter Eric Gostling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 10:07
CPC Classifications
E; E04; E04G; E04G1/00; E04G1/14; Y; Y10; Y10T; Y10T403/00; Y10T403/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1555847A
Cited
US2577930A
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US2613114A
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US2991854A
Cited
US3245188A
Cited
US3156329A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-01-19 | 1973-07-21 | 1974-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-19 | 1977-07-21 | 1978-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-19 | 1981-07-21 | 1982-01-20 | $7700.00 | Window Closed / Lapsed |