US2480677A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Grid making machine
Assignee: Raytheon Co
•
Filing: 1944-12-28
•
Granted: 1949-08-30
•
Expires: 1964-12-28
Abstract
No abstract record available.
Inventors
- 👤 Wilbur L Sheffield
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:48
CPC Classifications
H; H01; H01J; H01J19/00; H01J2893/00; H01J2893/0001; H01J2893/0012; H01J2893/0026
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US293176A
Cited
US423088A
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US561579A
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US1113779A
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US1399384A
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US1464505A
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US1583530A
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US1585905A
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US1814770A
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US1897460A
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US1874575A
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US1942069A
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US1994307A
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US1970599A
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US2181288A
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US2096605A
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US2188906A
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US2247713A
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US2292988A
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US2373427A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-08-29 | 1953-02-28 | 1953-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-08-29 | 1957-02-28 | 1957-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-08-29 | 1961-02-28 | 1961-08-30 | $7700.00 | Window Closed / Lapsed |