US2762166A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus and method for toughening ophthalmic lenses, or the like, and to the toughened lens
Assignee: TEMP R LENS Inc
•
Filing: 1953-05-11
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Granted: 1956-09-11
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Expires: 1973-05-11
Abstract
No abstract record available.
Inventors
- 👤 Bruce R Vent
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:15
CPC Classifications
C; C03; C03B; C03B40/00; C03B40/005; C03B27/00; C03B27/004; C03B27/04; C03B27/06; Y; Y10; Y10S; Y10S359/00; Y10S359/90
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1454200A
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US1713854A
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FR680578A
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US1916174A
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US1945879A
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US1895548A
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GB333840A
Cited
GB402641A
Cited
US2131404A
Cited
US2049075A
Cited
US2336200A
Cited
US2269060A
Cited
US2309325A
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US2390910A
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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) | 1959-09-11 | 1960-03-12 | 1960-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-09-11 | 1964-03-12 | 1964-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-09-11 | 1968-03-12 | 1968-09-11 | $7700.00 | Window Closed / Lapsed |