Patent US2805901A successfully refreshed from Google Patents.
US2805901A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal scaffolding
Assignee: Individual
•
Filing: 1954-05-28
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Granted: 1957-09-10
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Expires: 1974-05-28
Abstract
No abstract record available.
Inventors
- 👤 Irl W Humphrey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 03:09
CPC Classifications
E; E04; E04G; E04G1/00; E04G1/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB133496A
Cited
US437935A
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US1138838A
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US2303428A
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US2575461A
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US2561938A
Cited
US2671697A
Cited
US2654487A
Cited
US2686086A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-09-09 | 1961-03-11 | 1961-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-09 | 1965-03-11 | 1965-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-09 | 1969-03-11 | 1969-09-10 | $7700.00 | Window Closed / Lapsed |