US3363936A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Toughened sheets of glass
Assignee: Pilkington Group Ltd
•
Filing: 1965-03-16
•
Granted: 1968-01-16
•
Expires: 1985-03-16
Abstract
No abstract record available.
Inventors
- 👤 Baker Henry Wellstood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:35
CPC Classifications
C; C03; C03B; C03B27/00; C03B27/04; C03B27/0404; C03B27/0413; C03B27/052
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2244715A
Cited
US2177324A
Cited
US2910807A
Cited
US2866299A
Cited
US2924485A
Cited
US2968126A
Cited
US3114571A
Cited
US3146085A
Cited
FR1339535A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-01-15 | 1971-07-17 | 1972-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-01-15 | 1975-07-17 | 1976-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-01-15 | 1979-07-17 | 1980-01-16 | $7700.00 | Window Closed / Lapsed |