Patent US2832647A successfully refreshed from Google Patents.
US2832647A
Expired / Lapsed
US
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Trestle for scaffolding and the like
Assignee: Individual
•
Filing: 1953-12-29
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Granted: 1958-04-29
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Expires: 1973-12-29
Abstract
No abstract record available.
Inventors
- 👤 Gerke Willy Ernst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:01
CPC Classifications
B; B25; B25H; B25H1/00; B25H1/06; E; E04; E04G; E04G1/00; E04G1/28; E04G1/32
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1147668A
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US1685283A
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US1749706A
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US1946610A
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US2198956A
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US2427540A
Cited
GB668995A
Cited
GB688070A
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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) | 1961-04-28 | 1961-10-28 | 1962-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-28 | 1965-10-28 | 1966-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-28 | 1969-10-28 | 1970-04-29 | $7700.00 | Window Closed / Lapsed |