US3524739A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for the manufacture and surface modification of flat glass
Assignee: Pilkington Group Ltd
•
Filing: 1969-03-25
•
Granted: 1970-08-18
•
Expires: 1989-03-25
Abstract
No abstract record available.
Inventors
- 👤 David Gordon Loukes
- 👤 Glen Nightingale
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 00:30
CPC Classifications
C; C03; C03B; C03B18/00; C03B18/02; C03B18/14; C03C; C03C21/00; C03C21/001; C03C21/005; Y; Y10; Y10T; Y10T428/00; Y10T428/31; Y10T428/315
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) | 1973-08-17 | 1974-02-16 | 1974-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-08-17 | 1978-02-16 | 1978-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-08-17 | 1982-02-16 | 1982-08-18 | $7700.00 | Window Closed / Lapsed |