Patent US2840091A successfully refreshed from Google Patents.
US2840091A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Non-sagging loading dock canopy frame
Assignee: Individual
•
Filing: 1952-07-16
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Granted: 1958-06-24
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Expires: 1972-07-16
Abstract
No abstract record available.
Inventors
- 👤 Azzo Errol P D
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:31
CPC Classifications
B; B65; B65G; B65G69/00; B65G69/008
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US289174A
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US549565A
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US1109038A
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US1092496A
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US1736250A
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US1841278A
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US2294835A
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US2486170A
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US2560466A
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US2567995A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-23 | 1961-12-23 | 1962-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-23 | 1965-12-23 | 1966-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-23 | 1969-12-23 | 1970-06-24 | $7700.00 | Window Closed / Lapsed |