US2474977A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flexible electrode means for highfrequency heating
Assignee: United Shoe Machinery Corp
•
Filing: 1946-03-04
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Granted: 1949-07-05
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Expires: 1966-03-04
Abstract
No abstract record available.
Inventors
- 👤 George T Hart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:54
CPC Classifications
A; A43; A43D; A43D25/00; A43D25/20; H; H05; H05B; H05B6/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB189321376A
Cited
GB437041A
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US2130758A
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GB487463A
Cited
US2219497A
Cited
US2228136A
Cited
US2322903A
Cited
US2321131A
Cited
US2412982A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-07-04 | 1953-01-03 | 1953-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-07-04 | 1957-01-03 | 1957-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-07-04 | 1961-01-03 | 1961-07-05 | $7700.00 | Window Closed / Lapsed |