Patent US3387720A successfully refreshed from Google Patents.
US3387720A
Expired / Lapsed
US
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Stacking machine
Assignee: GEORGE RAYMOND WILKIN
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Filing: 1965-06-14
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Granted: 1968-06-11
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Expires: 1985-06-14
Abstract
No abstract record available.
Inventors
- 👤 Wilkin George Raymond
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:23
CPC Classifications
B; B65; B65G; B65G57/00; B65G57/30; B65G57/301; B65G57/303
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2997187A
Cited
US2028410A
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US2550587A
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US3019926A
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US3039624A
Cited
US2968490A
Cited
US3037645A
Cited
US3092266A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-06-11 | 1971-12-11 | 1972-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-06-11 | 1975-12-11 | 1976-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-06-11 | 1979-12-11 | 1980-06-11 | $7700.00 | Window Closed / Lapsed |