US2767518A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Forehearth structure
Assignee: Individual
•
Filing: 1953-01-13
•
Granted: 1956-10-23
•
Expires: 1973-01-13
Abstract
No abstract record available.
Inventors
- 👤 Arthur W Schmid
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:16
CPC Classifications
C; C03; C03B; C03B7/00; C03B7/02; C03B7/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1970113A
Cited
US1893061A
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US1970094A
Cited
US2139770A
Cited
US2144973A
Cited
US2299084A
Cited
US2226498A
Cited
US2618906A
Cited
US2616380A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-10-23 | 1960-04-23 | 1960-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-23 | 1964-04-23 | 1964-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-23 | 1968-04-23 | 1968-10-23 | $7700.00 | Window Closed / Lapsed |