US2552839A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means for molding undercut knob handles or other undercut portions upon glass articles
Assignee: BRITISH HEAT RESISTING GLASS C
•
Filing: 1945-08-24
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Granted: 1951-05-15
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Expires: 1965-08-24
Abstract
No abstract record available.
Inventors
- 👤 Brown Arthur Selwyn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:08
CPC Classifications
C; C03; C03B; C03B23/00; C03B23/0013; C03B23/002
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US463646A
Cited
US519113A
Cited
FR339479A
Cited
US1159853A
Cited
GB339484A
Cited
US2335419A
Cited
US2433399A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-05-14 | 1954-11-13 | 1955-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-14 | 1958-11-13 | 1959-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-14 | 1962-11-13 | 1963-05-15 | $7700.00 | Window Closed / Lapsed |