US2478231A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for sizing and setting articles such as piston rings
Assignee: Northrop Grumman Space and Mission Systems Corp
•
Filing: 1945-11-07
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Granted: 1949-08-09
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Expires: 1965-11-07
Abstract
No abstract record available.
Inventors
- 👤 Elizabeth M Bowers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 00:33
CPC Classifications
B; B23; B23B; B23B31/00; B23B31/02; B23B31/10; B23B31/12; B23B31/16; B23B31/1627; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49229; Y10T29/49274; Y10T29/49279
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1268789A
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GB141094A
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US1445150A
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US1368890A
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US1457579A
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US1610982A
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US1839501A
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US2036751A
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US2101888A
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US2202018A
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US2398373A
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US2311919A
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US2324982A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-08-08 | 1953-02-07 | 1953-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-08-08 | 1957-02-07 | 1957-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-08-08 | 1961-02-07 | 1961-08-09 | $7700.00 | Window Closed / Lapsed |