US3027804A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Contact lens support
Assignee: PLASMATIC Inc
•
Filing: 1958-08-25
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Granted: 1962-04-03
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Expires: 1978-08-25
Abstract
No abstract record available.
Inventors
- 👤 Newton K Wesley
- 👤 George S Mattie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:41
CPC Classifications
A; A61; A61B; A61B3/00; A61B3/10; A61B3/107; G; G01; G01M; G01M11/00; G01M11/02; G01M11/0207; G02; G02C; G02C7/00; G02C7/02; G02C7/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1305980A
Cited
US2300251A
Cited
US2370389A
Cited
US2418786A
Cited
US2437436A
Cited
FR1110349A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-04-02 | 1965-10-02 | 1966-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-04-02 | 1969-10-02 | 1970-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-04-02 | 1973-10-02 | 1974-04-03 | $7700.00 | Window Closed / Lapsed |