Patent US3490393A successfully refreshed from Google Patents.
US3490393A
Expired / Lapsed
US
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Construction for shelves and/or cabinets
Assignee: DONALD R NELSON
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Filing: 1967-05-12
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Granted: 1970-01-20
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Expires: 1987-05-12
Abstract
No abstract record available.
Inventors
- 👤 Donald R Nelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:27
CPC Classifications
A; A47; A47B; A47B57/00; A47B57/30; A47B57/36; A47B57/06; A47B57/12; A47B57/14
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) | 1973-01-19 | 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 |