Patent US2469857A successfully refreshed from Google Patents.
US2469857A
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US
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Battery handle connector
Assignee: Welch Allyn Inc
•
Filing: 1944-08-03
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Granted: 1949-05-10
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Expires: 1964-08-03
Abstract
No abstract record available.
Inventors
- 👤 William N Allyn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:54
CPC Classifications
A; A61; A61B; A61B1/00; A61B1/227
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1307273A
Cited
US199312A
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US331170A
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US582022A
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US83213A
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US1043721A
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US1087532A
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US1145586A
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US1589469A
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US1516133A
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US1621461A
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US1638986A
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US1945005A
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US2303224A
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US2400351A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-05-09 | 1952-11-08 | 1953-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-05-09 | 1956-11-08 | 1957-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-05-09 | 1960-11-08 | 1961-05-10 | $7700.00 | Window Closed / Lapsed |