Patent US2496969A successfully refreshed from Google Patents.
US2496969A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spectacle sweat bar
Assignee: Welsh Manufacturing Co
•
Filing: 1947-10-07
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Granted: 1950-02-07
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Expires: 1967-10-07
Abstract
No abstract record available.
Inventors
- 👤 Wentworth Wilbur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:57
CPC Classifications
G; G02; G02C; G02C5/00; G02C5/02; G02C11/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1307223A
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US1241715A
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US1278444A
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US1238396A
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US1265546A
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US1453814A
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US1512661A
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US1611428A
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US1910456A
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US2075020A
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US2393837A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-02-06 | 1953-08-08 | 1954-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-02-06 | 1957-08-08 | 1958-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-02-06 | 1961-08-08 | 1962-02-07 | $7700.00 | Window Closed / Lapsed |