US2493538A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Card filing system
Assignee: Individual
•
Filing: 1945-04-16
•
Granted: 1950-01-03
•
Expires: 1965-04-16
Abstract
No abstract record available.
Inventors
- 👤 Sherman S Karns
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:01
CPC Classifications
A; A47; A47B; A47B49/00; A47B63/00; A47B63/06; A47B63/062
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US770788A
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US1031321A
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US997965A
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US1032111A
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US1029231A
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US1130597A
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US1347272A
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US1266458A
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US1432277A
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US1485169A
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US1596225A
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US2255889A
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US2340862A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-01-02 | 1953-07-04 | 1954-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-01-02 | 1957-07-04 | 1958-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-01-02 | 1961-07-04 | 1962-01-03 | $7700.00 | Window Closed / Lapsed |