US3030746A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of grinding and polishing optical glass
Assignee: Bausch and Lomb Inc
•
Filing: 1959-10-15
•
Granted: 1962-04-24
•
Expires: 1979-10-15
Abstract
No abstract record available.
Inventors
- 👤 Arthur G Firestine
- 👤 Charles F Mooney
- 👤 Theodore J Zak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:31
CPC Classifications
B; B24; B24B; B24B31/00; B24B31/12; B24B31/14; B24B31/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB191229418A
Cited
US1528543A
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US1887026A
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US2062671A
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US2185262A
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US2378399A
Cited
US2359323A
Cited
US2387135A
Cited
US2431870A
Cited
US2799789A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-04-23 | 1965-10-23 | 1966-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-04-23 | 1969-10-23 | 1970-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-04-23 | 1973-10-23 | 1974-04-24 | $7700.00 | Window Closed / Lapsed |