Patent US2841452A successfully refreshed from Google Patents.
US2841452A
Expired / Lapsed
US
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Automatic brace locks for sectional scaffolding
Assignee: PATENT SCAFFOLDING CO Inc
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Filing: 1953-02-24
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Granted: 1958-07-01
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Expires: 1973-02-24
Abstract
No abstract record available.
Inventors
- 👤 Arthur C Borgman
- 👤 William B Sheard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:10
CPC Classifications
E; E04; E04G; E04G7/00; E04G7/30; E04G7/302; E04G7/303; E04G7/305; Y; Y10; Y10T; Y10T403/00; Y10T403/70; Y10T403/7075
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1259397A
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US1961383A
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US2246457A
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US2468683A
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US2561938A
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US2635717A
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US2686086A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-30 | 1961-12-30 | 1962-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-30 | 1965-12-30 | 1966-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-30 | 1969-12-30 | 1970-07-01 | $7700.00 | Window Closed / Lapsed |