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Patent US2446623A successfully refreshed from Google Patents.
US2446623A
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High-frequency progressive bonding apparatus for plastic materials
Assignee: United Shoe Machinery Corp
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Filing: 1947-01-31
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Granted: 1948-08-10
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Expires: 1967-01-31
Abstract
No abstract record available.
Inventors
- 👤 Jr Edward Sohier Welch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:48
CPC Classifications
B; B29; B29C; B29C65/00; B29C65/02; B29C65/04; B29C66/00; B29C66/01; B29C66/03; B29C66/032; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/1122; B29C66/32; B29C66/326; B29C66/3262; B29C66/40; B29C66/41; B29C66/43; B29C66/80; B29C66/81; B29C66/812; B29C66/8126; B29C66/81262; B29C66/81263; B29C66/83; B29C66/832; B29C66/8322; B29C65/78; B29C65/7858; B29C65/7888; B29C65/7891; B29C66/818; B29C66/8187; B29C66/81871; Y; Y10; Y10T; Y10T156/00; Y10T156/17; Y10T156/1702; Y10T156/1712; Y10T156/1741
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2322298A
Cited
US2432412A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-08-10 | 1952-02-09 | 1952-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-08-10 | 1956-02-09 | 1956-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-08-10 | 1960-02-09 | 1960-08-10 | $7700.00 | Window Closed / Lapsed |