Patent US2537804A successfully refreshed from Google Patents.
US2537804A
Expired / Lapsed
US
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Transparent panel unit
Assignee: Libbey Owens Ford Glass Co
•
Filing: 1943-02-08
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Granted: 1951-01-09
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Expires: 1963-02-08
Abstract
No abstract record available.
Inventors
- 👤 George B Watkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:58
CPC Classifications
B; B29; B29C; B29C70/00; B29C70/68; B29C70/74; B29C70/76; B29C70/763; B29C39/00; B29C39/02; B29C39/10; B32; B32B; B32B17/00; B32B17/06; B32B17/10; B32B17/10005; B32B17/10009; B32B17/10036; B32B17/10045; B32B17/10165; B32B17/10293; B32B17/10302; B32B17/10807; B32B17/10889; B29K; B29K2709/00; B29K2709/08; B29L; B29L2031/00; B29L2031/778; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/24926
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-01-08 | 1954-07-10 | 1955-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-01-08 | 1958-07-10 | 1959-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-01-08 | 1962-07-10 | 1963-01-09 | $7700.00 | Window Closed / Lapsed |