Patent US3557508A successfully refreshed from Google Patents.
US3557508A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Loading dock shelters
Assignee: DUBUQUE AWNING AND TENT Co
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Filing: 1969-07-02
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Granted: 1971-01-26
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Expires: 1989-07-02
Abstract
Abstract LOADING DOCK SHELTER WITH HEAD CURTAIN WHICH MAY BE FIXEDLY ATTACHED AT ITS ENDS TO SUPPORT, AND WITH PLEATS EMBODIED THEREIN IN A MANNER TO AFFORD A NORMALLY FLAT PANEL CAPABLE OF LATERAL DISPLACEMENT.
Inventors
- 👤 Cyril P Frommelt
- 👤 Sylvan J Frommelt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:53
CPC Classifications
B; B65; B65G; B65G69/00; B65G69/008
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-25 | 1974-07-27 | 1975-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-25 | 1978-07-27 | 1979-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-25 | 1982-07-27 | 1983-01-26 | $7700.00 | Window Closed / Lapsed |