US2593892A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Earpiece
Assignee: Individual
•
Filing: 1950-04-05
•
Granted: 1952-04-22
•
Expires: 1970-04-05
Abstract
No abstract record available.
Inventors
- 👤 Elmore A Kindel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 02:07
CPC Classifications
A; A42; A42B; A42B3/00; A42B3/04; A42B3/16; A42B3/166; A42B3/30; A61; A61F; A61F11/00; A61F11/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US350393A
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US387709A
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US882700A
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US1223545A
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US1599898A
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US1584662A
Cited
US1621629A
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US1857974A
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US1973330A
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US2345842A
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US2447470A
Cited
US2407731A
Cited
US2468721A
Cited
US2488235A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-04-22 | 1955-10-22 | 1956-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-22 | 1959-10-22 | 1960-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-22 | 1963-10-22 | 1964-04-22 | $7700.00 | Window Closed / Lapsed |