Patent US3499556A successfully refreshed from Google Patents.
US3499556A
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Hydraulic unloading mechanism for a storage structure
Assignee: CST Storage Inc
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Filing: 1967-07-03
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Granted: 1970-03-10
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Expires: 1987-07-03
Abstract
No abstract record available.
Inventors
- 👤 Leonard E Broberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 15:13
CPC Classifications
A; A01; A01F; A01F25/00; A01F25/16; A01F25/20; A01F25/2018
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2652785A
Cited
US2711834A
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US3237788A
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US3282446A
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US3289862A
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US3335955A
Cited
US3417880A
Cited
US3356235A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-03-09 | 1973-09-08 | 1974-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-09 | 1977-09-08 | 1978-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-09 | 1981-09-08 | 1982-03-10 | $7700.00 | Window Closed / Lapsed |