Patent US3428156A successfully refreshed from Google Patents.
US3428156A
Expired / Lapsed
US
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Expandable chute device
Assignee: Kaiser Industries Corp
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Filing: 1967-01-23
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Granted: 1969-02-18
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Expires: 1987-01-23
Abstract
No abstract record available.
Inventors
- 👤 Fred P Charyn
- 👤 Hoke M Garrett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 02:33
CPC Classifications
B; B65; B65G; B65G69/00; B65G69/18; B65G69/181; B65G69/182; B65G11/00; B65G11/08; B65G11/083
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US907692A
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US1101561A
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US1199198A
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US1503669A
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US2525167A
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US2602498A
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US3298544A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-02-18 | 1972-08-19 | 1973-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-18 | 1976-08-19 | 1977-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-18 | 1980-08-19 | 1981-02-18 | $7700.00 | Window Closed / Lapsed |