US2510113A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machine for grinding lenses
Assignee: Individual
•
Filing: 1945-03-17
•
Granted: 1950-06-06
•
Expires: 1965-03-17
Abstract
No abstract record available.
Inventors
- 👤 Arthur J Holman
- 👤 William J Kennedy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:49
CPC Classifications
B; B24; B24B; B24B13/00; B24B13/02; B24B13/023
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US553225A
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GB189406978A
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FR327311A
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US836486A
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US1221858A
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US1140421A
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US1401832A
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US1401830A
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US1479843A
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US1426147A
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US1448239A
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US1677382A
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US1901181A
Cited
US1828663A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-06-05 | 1953-12-05 | 1954-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-06-05 | 1957-12-05 | 1958-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-06-05 | 1961-12-05 | 1962-06-06 | $7700.00 | Window Closed / Lapsed |