Patent US2762166A successfully refreshed from Google Patents.
US2762166A
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Apparatus and method for toughening ophthalmic lenses, or the like, and to the toughened lens
Assignee: TEMP R LENS Inc
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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 12:03
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)
US1308820A
Cited
US1454200A
Cited
US1713854A
Cited
FR680578A
Cited
US1916174A
Cited
US1945879A
Cited
US1895548A
Cited
GB333840A
Cited
GB402641A
Cited
US2131404A
Cited
US2049075A
Cited
US2336200A
Cited
US2269060A
Cited
US2309325A
Cited
US2390910A
Cited
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 |