US2487628A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gauging device for piston rings and the like
Assignee: Sheffield Corp
•
Filing: 1944-11-10
•
Granted: 1949-11-08
•
Expires: 1964-11-10
Abstract
No abstract record available.
Inventors
- 👤 Aller Willis Fay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:52
CPC Classifications
G; G01; G01B; G01B11/00; G01B11/16; G01B11/24; G01B11/2433; Y; Y10; Y10S; Y10S33/00; Y10S33/17
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2433588A
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US2441343A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-11-07 | 1953-05-09 | 1953-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-11-07 | 1957-05-09 | 1957-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-11-07 | 1961-05-09 | 1961-11-08 | $7700.00 | Window Closed / Lapsed |