US2744794A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Foldable end-frames for sectional scaffoldings
Assignee: PATENT SCAFFOLDING CO Inc
•
Filing: 1953-12-07
•
Granted: 1956-05-08
•
Expires: 1973-12-07
Abstract
No abstract record available.
Inventors
- 👤 Sheard William Byl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 01:27
CPC Classifications
E; E04; E04G; E04G1/00; E04G1/34; Y; Y10; Y10T; Y10T403/00; Y10T403/32; Y10T403/32254; Y10T403/32262; Y10T403/32271; Y10T403/32319; Y10T403/32409
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US927713A
Cited
US1766085A
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US2293489A
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US2467688A
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US2594464A
Cited
US2593386A
Cited
CH284333A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-05-08 | 1959-11-07 | 1960-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-08 | 1963-11-07 | 1964-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-08 | 1967-11-07 | 1968-05-08 | $7700.00 | Window Closed / Lapsed |