US2602269A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and apparatus for forming undercut sockets in a material in a hot plastic state
Assignee: Pilkington Group Ltd
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Filing: 1947-02-18
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Granted: 1952-07-08
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Expires: 1967-02-18
Abstract
No abstract record available.
Inventors
- 👤 Wilcock John Edward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:27
CPC Classifications
C; C03; C03B; C03B23/00; C03B23/004
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-07-08 | 1956-01-07 | 1956-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-07-08 | 1960-01-07 | 1960-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-07-08 | 1964-01-07 | 1964-07-08 | $7700.00 | Window Closed / Lapsed |