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US3455469A
Expired / Lapsed
US
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Elevator conveyor and storage rack system
Assignee: CRAWHORN CHARLES 4521 CRESTVIEW DRIVE NORCO CA 91760
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Filing: 1967-02-07
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Granted: 1969-07-15
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Expires: 1987-02-07
Abstract
No abstract record available.
Inventors
- 👤 George Q Evans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:57
CPC Classifications
B; B65; B65G; B65G1/00; B65G1/02; B65G1/04; B65G1/06; B65G1/0407; B65G1/0435
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1739403A
Cited
US2685972A
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US3127042A
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US827050A
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US1949964A
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US2605912A
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US2769559A
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US3009589A
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US3016973A
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GB977633A
Cited
GB991871A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-07-14 | 1973-01-13 | 1973-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-14 | 1977-01-13 | 1977-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-14 | 1981-01-13 | 1981-07-15 | $7700.00 | Window Closed / Lapsed |