US3030859A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making contact lenses
Assignee: Individual
•
Filing: 1959-05-25
•
Granted: 1962-04-24
•
Expires: 1979-05-25
Abstract
No abstract record available.
Inventors
- 👤 Jr Daniel O Elliott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:08
CPC Classifications
B; B29; B29D; B29D11/00; B29D11/00932; B29D11/00942; Y; Y10; Y10S; Y10S425/00; Y10S425/808; Y10T; Y10T82/00; Y10T82/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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 |