US2504831A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for engraving glass
Assignee: Libbey Owens Ford Glass Co
•
Filing: 1947-12-31
•
Granted: 1950-04-18
•
Expires: 1967-12-31
Abstract
No abstract record available.
Inventors
- 👤 Charles H Griss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:11
CPC Classifications
B; B24; B24B; B24B1/00; B24B1/04; Y; Y10; Y10S; Y10S29/00; Y10S29/046
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1776592A
Cited
US1981040A
Cited
US1966446A
Cited
US2293100A
Cited
GB553176A
Cited
US2431501A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-04-17 | 1953-10-17 | 1954-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-04-17 | 1957-10-17 | 1958-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-04-17 | 1961-10-17 | 1962-04-18 | $7700.00 | Window Closed / Lapsed |