Patent US3128743A successfully refreshed from Google Patents.
US3447704A
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Container type automatic loading and discharge system for dumbwaiters
Assignee: Guilbert Inc
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Filing: 1967-04-10
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Granted: 1969-06-03
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Expires: 1987-04-10
Abstract
No abstract record available.
Inventors
- 👤 Nicholas R Guilbert Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:50
CPC Classifications
B; B65; B65G; B65G47/00; B65G2812/00; B65G2812/02; B65G2812/02267; B65G2812/02415; B65G2812/02613; B65G2812/02673; B65G2812/02683; B65G2812/02693; B65G2812/02702; B65G2812/02712
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2073721A
Cited
US1998290A
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US2065107A
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US2428856A
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US2752051A
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US3150787A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-02 | 1972-12-02 | 1973-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-02 | 1976-12-02 | 1977-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-02 | 1980-12-02 | 1981-06-03 | $7700.00 | Window Closed / Lapsed |