US3404488A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for blocking and deblocking lenses
Assignee: SHURON Inc 40 HUMBOLDT STREET ROCHESTER NEW YORK 14601 A CORP OF NEW YORK
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Filing: 1965-08-09
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Granted: 1968-10-08
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Expires: 1985-08-09
Abstract
No abstract record available.
Inventors
- 👤 Douglas L Cox
- 👤 James E Savoie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:31
CPC Classifications
B; B24; B24B; B24B13/00; B24B13/005; B24B13/0057
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1911153A
Cited
US2151233A
Cited
US2450433A
Cited
US3192676A
Cited
US3226887A
Cited
US3221378A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-10-08 | 1972-04-08 | 1972-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-08 | 1976-04-08 | 1976-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-08 | 1980-04-08 | 1980-10-08 | $7700.00 | Window Closed / Lapsed |