US3028783A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for testing the density of coatings on support bodies
Assignee: Libbey Owens Ford Glass Co
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Filing: 1956-09-24
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Granted: 1962-04-10
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Expires: 1976-09-24
Abstract
No abstract record available.
Inventors
- 👤 Homer D F Peters
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:48
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/84; G01N21/86
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1882962A
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US2044131A
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US2287808A
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US2394129A
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US2428796A
Cited
US2547545A
Cited
US2549402A
Cited
US2773412A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-04-09 | 1965-10-09 | 1966-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-04-09 | 1969-10-09 | 1970-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-04-09 | 1973-10-09 | 1974-04-10 | $7700.00 | Window Closed / Lapsed |