US2431320A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tray unloader
Assignee: STANDARD KNAPP CORP
•
Filing: 1944-08-02
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Granted: 1947-11-25
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Expires: 1964-08-02
Abstract
No abstract record available.
Inventors
- 👤 Paul E Fischer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:58
CPC Classifications
B; B65; B65B; B65B69/00; B65G; B65G47/00; B65G47/52; B65G47/68; B65G47/682; B65G47/684
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US512381A
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US875837A
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US1130383A
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US1139070A
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US1461222A
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US1943483A
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US1987336A
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US2119725A
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US2198976A
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US2355722A
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US2222745A
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US2264348A
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US2253283A
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US2326794A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-11-24 | 1951-05-26 | 1951-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-11-24 | 1955-05-26 | 1955-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-11-24 | 1959-05-26 | 1959-11-25 | $7700.00 | Window Closed / Lapsed |