US2960919A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Grating and method of making same
Assignee: Reliance Steel Products Co
•
Filing: 1956-10-24
•
Granted: 1960-11-22
•
Expires: 1976-10-24
Abstract
No abstract record available.
Inventors
- 👤 Nagin Harold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:24
CPC Classifications
E; E01; E01D; E01D19/00; E01D19/12; E01D19/125; E01D2101/00; E01D2101/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB190400946A
Cited
US1665846A
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US1750039A
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US2077749A
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GB481868A
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GB513453A
Cited
US2302581A
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US2319468A
Cited
US2265735A
Cited
CH243282A
Cited
US2512996A
Cited
US2682517A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-11-22 | 1964-05-23 | 1964-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-22 | 1968-05-23 | 1968-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-22 | 1972-05-23 | 1972-11-22 | $7700.00 | Window Closed / Lapsed |