Patent US2987011A successfully refreshed from Google Patents.
US2987011A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conveyor interchange
Assignee: PALMER BEE CO
•
Filing: 1958-02-03
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Granted: 1961-06-06
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Expires: 1978-02-03
Abstract
No abstract record available.
Inventors
- 👤 Melmer Eric Otto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 01:18
CPC Classifications
B; B61; B61B; B61B10/00; B61B10/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1865788A
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US2040353A
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US2344155A
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US2527244A
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US2635555A
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US2580758A
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US2660127A
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US2688935A
Cited
US2868138A
Cited
US2868139A
Cited
US2875704A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-06-05 | 1964-12-05 | 1965-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-05 | 1968-12-05 | 1969-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-05 | 1972-12-05 | 1973-06-06 | $7700.00 | Window Closed / Lapsed |