Patent US2137472A successfully refreshed from Google Patents.
US2137472A
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US
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Mold for the manufacture of articles of glass in combination with plastic materials
Assignee: Pilkington Group Ltd
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Filing: 1937-09-29
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Granted: 1938-11-22
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Expires: 1957-09-29
Abstract
No abstract record available.
Inventors
- 👤 Forbes Lewis Jex-Blake
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:13
CPC Classifications
B; B29; B29C; B29C43/00; B29C43/32; B29C43/36; B29C43/361; B29C43/02; B29C43/18; B29C70/00; B29C70/68; B29C70/74; B29C70/76; B29C70/763; B32; B32B; B32B17/00; B32B17/06; B32B17/10; B32B17/10005; B32B17/10165; B32B17/10293; B32B17/10302; B29C2043/3615; B29K; B29K2709/00; B29K2709/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1941-11-21 | 1942-05-23 | 1942-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1945-11-21 | 1946-05-23 | 1946-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1949-11-21 | 1950-05-23 | 1950-11-22 | $7700.00 | Window Closed / Lapsed |