US3380289A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Testing apparatus
Assignee: Libbey Owens Ford Glass Co
•
Filing: 1965-06-10
•
Granted: 1968-04-30
•
Expires: 1985-06-10
Abstract
No abstract record available.
Inventors
- 👤 Emmett L Walters
- 👤 James H Bolcey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:25
CPC Classifications
G; G01; G01N; G01N3/00; G01N3/30; G01N3/303
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1901460A
Cited
US2052357A
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US2377536A
Cited
US2579503A
Cited
US2500933A
Cited
US2799824A
Cited
FR1173988A
Cited
US2890766A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-04-30 | 1971-10-30 | 1972-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-30 | 1975-10-30 | 1976-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-30 | 1979-10-30 | 1980-04-30 | $7700.00 | Window Closed / Lapsed |