US2838816A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Permanent mold with sand dome
Assignee: Griffin Wheel Co Inc
•
Filing: 1955-09-14
•
Granted: 1958-06-17
•
Expires: 1975-09-14
Abstract
No abstract record available.
Inventors
- 👤 Charles F Strom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:18
CPC Classifications
B; B22; B22D; B22D15/00; B22D15/005; B22C; B22C9/00; B22C9/06; B22C9/068; B22C9/22; B22C9/28; B22D18/00; B22D18/04; Y; Y10; Y10S; Y10S164/00; Y10S164/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US486327A
Cited
US695091A
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US1161034A
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US2459025A
Cited
US2431879A
Cited
US2765505A
Cited
US2659944A
Cited
US2728963A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-16 | 1961-12-16 | 1962-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-16 | 1965-12-16 | 1966-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-16 | 1969-12-16 | 1970-06-17 | $7700.00 | Window Closed / Lapsed |