US1718347A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Grinding head
Assignee: Pilkington North America Inc
•
Filing: 1925-07-02
•
Granted: 1929-06-25
•
Expires: 1945-07-02
Abstract
No abstract record available.
Inventors
- 👤 John C Gipe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:00
CPC Classifications
B; B24; B24B; B24B7/00; B24B7/20; B24B7/22; B24B7/24; B24B7/242; B24B7/245
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) | 1932-06-24 | 1932-12-24 | 1933-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1936-06-24 | 1936-12-24 | 1937-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1940-06-24 | 1940-12-24 | 1941-06-25 | $7700.00 | Window Closed / Lapsed |