US3495874A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sea urchin chair
Assignee: Royal College of Art
•
Filing: 1968-02-12
•
Granted: 1970-02-17
•
Expires: 1988-02-12
Abstract
No abstract record available.
Inventors
- 👤 William Roger Dean
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:45
CPC Classifications
A; A47; A47C; A47C5/00; A47C5/12; A47C5/125; A47C3/00; A47C3/12; A47C3/16; Y; Y10; Y10S; Y10S297/00; Y10S297/08
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) | 1973-02-16 | 1973-08-18 | 1974-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-16 | 1977-08-18 | 1978-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-16 | 1981-08-18 | 1982-02-17 | $7700.00 | Window Closed / Lapsed |