US2905054A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reading glass and mounting
Assignee: Individual
•
Filing: 1954-07-07
•
Granted: 1959-09-22
•
Expires: 1974-07-07
Abstract
No abstract record available.
Inventors
- 👤 Sandy B Logan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:27
CPC Classifications
G; G02; G02B; G02B25/00; G02B25/002; G02B25/008
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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FR430131A
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US1053512A
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GB228704A
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US1989454A
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US2652499A
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US2767612A
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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) | 1962-09-21 | 1963-03-23 | 1963-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-21 | 1967-03-23 | 1967-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-21 | 1971-03-23 | 1971-09-22 | $7700.00 | Window Closed / Lapsed |