US2937767A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shelving structure
Assignee: UNISTRUT PRODUCTS CO
•
Filing: 1958-12-15
•
Granted: 1960-05-24
•
Expires: 1978-12-15
Abstract
No abstract record available.
Inventors
- 👤 Robert H Butler
- 👤 Sundene Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:36
CPC Classifications
A; A47; A47B; A47B57/00; A47B57/30; A47B57/40; A47B57/402; A47B47/00; A47B47/02; A47B47/021; A47B47/028
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1473064A
Cited
US2126511A
Cited
US2143268A
Cited
US2191701A
Cited
US2772846A
Cited
US2872049A
Cited
US2815130A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-05-24 | 1963-11-23 | 1964-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-24 | 1967-11-23 | 1968-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-24 | 1971-11-23 | 1972-05-24 | $7700.00 | Window Closed / Lapsed |