US2917129A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High clearance scaffold
Assignee: Werner Co
•
Filing: 1957-01-07
•
Granted: 1959-12-15
•
Expires: 1977-01-07
Abstract
No abstract record available.
Inventors
- 👤 Charles F Grover
- 👤 Paul E Stoyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 03:03
CPC Classifications
E; E04; E04G; E04G1/00; E04G1/34; Y; Y10; Y10T; Y10T24/00; Y10T24/45; Y10T24/45225; Y10T24/45969
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US848304A
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US1022940A
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US1141385A
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US1369199A
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GB590281A
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US2665950A
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US2593386A
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US2619390A
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US2640734A
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US2708607A
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US2782075A
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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) | 1962-12-14 | 1963-06-15 | 1963-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-12-14 | 1967-06-15 | 1967-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-12-14 | 1971-06-15 | 1971-12-15 | $7700.00 | Window Closed / Lapsed |