Patent US2522823A successfully refreshed from Google Patents.
US2522823A
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Automatic tuning of high-frequency electrical seaming apparatus
Assignee: Union Special Machine Co
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Filing: 1946-04-16
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Granted: 1950-09-19
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Expires: 1966-04-16
Abstract
No abstract record available.
Inventors
- 👤 Robert A Hayes
- 👤 Willard C Rykert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:42
CPC Classifications
B; B29; B29C; B29C66/00; B29C66/80; B29C66/84; B29C66/845; B29C65/00; B29C65/02; B29C65/04; B29C66/40; B29C66/41; B29C66/43; B29C66/81; B29C66/816; B29C66/8161; B29C66/82; B29C66/822; B29C66/8221; B29C66/8223; B29C66/83; B29C66/834; B29C66/8341; B29C66/83411; B29C66/83413; H; H05; H05B; H05B6/00; H05B6/46; H05B6/48; B29C66/818; B29C66/8187; B29C66/81871
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB375587A
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US2147689A
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US2236998A
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US2324068A
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GB556292A
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US2370624A
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US2396004A
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US2391086A
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US2434330A
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US2432412A
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US2468263A
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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) | 1953-09-18 | 1954-03-20 | 1954-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-09-18 | 1958-03-20 | 1958-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-09-18 | 1962-03-20 | 1962-09-19 | $7700.00 | Window Closed / Lapsed |