US1783886A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Piston-ring casting
Assignee: Individual
•
Filing: 1930-02-17
•
Granted: 1930-12-02
•
Expires: 1950-02-17
Abstract
No abstract record available.
Inventors
- 👤 Thurlow E Mcfall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:30
CPC Classifications
B; B23; B23P; B23P15/00; B23P15/06; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49229; Y10T29/49274; Y10T29/49277; Y10T428/00; Y10T428/12; Y10T428/12188; Y10T428/12229; Y10T428/12236; Y10T428/12243; Y10T428/12389
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) | 1933-12-01 | 1934-06-02 | 1934-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1937-12-01 | 1938-06-02 | 1938-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1941-12-01 | 1942-06-02 | 1942-12-02 | $7700.00 | Window Closed / Lapsed |