Patent US2641371A successfully refreshed from Google Patents.
US2641371A
Expired / Lapsed
US
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Conveyer system
Assignee: RW Webster and Co Ltd
•
Filing: 1950-06-12
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Granted: 1953-06-09
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Expires: 1970-06-12
Abstract
No abstract record available.
Inventors
- 👤 Webster Alexander Hyde
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:46
CPC Classifications
B; B65; B65G; B65G47/00; B65G47/22; B65G47/26; B65G47/28; B65G47/29; B65B; B65B43/00; B65B43/42; B65B43/52
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1605984A
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US1115758A
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US1125310A
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US1203676A
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US1246180A
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US1586544A
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US1855767A
Cited
US2137478A
Cited
US2459204A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-08 | 1956-12-08 | 1957-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-08 | 1960-12-08 | 1961-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-08 | 1964-12-08 | 1965-06-09 | $7700.00 | Window Closed / Lapsed |