US3446361A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rack and method of making the same
Assignee: United States Steel Corp
•
Filing: 1966-12-23
•
Granted: 1969-05-27
•
Expires: 1986-12-23
Abstract
No abstract record available.
Inventors
- 👤 Donald L Douty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:37
CPC Classifications
A; A47; A47C; A47C7/00; A47C7/02; A47C7/28; A47C7/32; A47B; A47B55/00; D; D06; D06F; D06F57/00; F; F25; F25D; F25D25/00; F25D25/02; F25D2325/00; F25D2325/023; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49616; Y10T29/4962; Y10T29/49826; Y10T29/49885; Y10T29/49888
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2804213A
Cited
US2885132A
Cited
US2932358A
Cited
US3158224A
Cited
US3083836A
Cited
US3225862A
Cited
DK96991A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-05-26 | 1972-11-25 | 1973-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-05-26 | 1976-11-25 | 1977-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-05-26 | 1980-11-25 | 1981-05-27 | $7700.00 | Window Closed / Lapsed |