US2539646A
Expired / Lapsed
US
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High-frequency progressive bonding apparatus
Assignee: United Shoe Machinery Corp
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Filing: 1947-03-19
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Granted: 1951-01-30
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Expires: 1967-03-19
Abstract
No abstract record available.
Inventors
- 👤 Jr Edward Sohier Welch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:06
CPC Classifications
B; B29; B29C; B29C66/00; B29C66/80; B29C66/83; B29C66/834; B29C66/8341; B29C66/83411; B29C65/00; B29C65/02; B29C65/04; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/1122; B29C66/40; B29C66/41; B29C66/43; B29C66/81; B29C66/814; B29C66/8141; B29C66/81427; B29C66/81433; B29C66/818; B29C66/8187; B29C66/81871; B29C66/84; B29C66/845
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2342846A
Cited
US2321131A
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US2459260A
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US2434966A
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US2432412A
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US2474420A
Cited
US2469990A
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US2477313A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-01-29 | 1954-07-31 | 1955-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-01-29 | 1958-07-31 | 1959-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-01-29 | 1962-07-31 | 1963-01-30 | $7700.00 | Window Closed / Lapsed |