US1535330A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of centrifugal casting
Assignee: Sperry Gyroscope Co Ltd
•
Filing: 1919-07-17
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Granted: 1925-04-28
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Expires: 1939-07-17
Abstract
No abstract record available.
Inventors
- 👤 Chester B Mills
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:12
CPC Classifications
B; B22; B22D; B22D13/00; Y; Y10; Y10S; Y10S164/00; Y10S164/10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49009; Y10T29/49011; Y10T29/49012; Y10T29/4998; Y10T29/49988; Y10T29/49989
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) | 1928-04-27 | 1928-10-27 | 1929-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1932-04-27 | 1932-10-27 | 1933-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1936-04-27 | 1936-10-27 | 1937-04-28 | $7700.00 | Window Closed / Lapsed |