Patent US2977450A successfully refreshed from Google Patents.
US2977450A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transparent electrically conducting films
Assignee: Libbey Owens Ford Glass Co
•
Filing: 1957-12-16
•
Granted: 1961-03-28
•
Expires: 1977-12-16
Abstract
No abstract record available.
Inventors
- 👤 James H Boicey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:17
CPC Classifications
B; B32; B32B; B32B17/00; B32B17/06; B32B17/10; B32B17/10005; B32B17/10165; B32B17/10293; B32B17/10302; B32B17/10009; B32B17/10036; B32B17/10045; B32B17/10174; H; H01; H01B; H01B1/00
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2205543A
Cited
US2314766A
Cited
US2299162A
Cited
US2513993A
Cited
US2507036A
Cited
US2676117A
Cited
US2697675A
Cited
US2795682A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-03-27 | 1964-09-26 | 1965-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-03-27 | 1968-09-26 | 1969-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-03-27 | 1972-09-26 | 1973-03-28 | $7700.00 | Window Closed / Lapsed |