US3396258A
Expired / Lapsed
US
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Apparatus for induction heating
Assignee: Individual
•
Filing: 1965-10-21
•
Granted: 1968-08-06
•
Expires: 1985-10-21
Abstract
No abstract record available.
Inventors
- 👤 Alfred F Leatherman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:48
CPC Classifications
B; B29; B29C; B29C66/00; B29C66/50; B29C66/51; B29C66/54; B29C65/00; B29C65/02; B29C65/34; B29C65/36; B29C65/3604; B29C65/3644; B29C65/3668; B29C65/3672; B29C65/3676; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/1122; B29C66/13; B29C66/133; B29C66/20; B29C66/23; B29C66/232; B29C66/24; B29C66/244; B29C66/40; B29C66/41; B29C66/43; B29C66/61; B29C66/63; B29C66/80; B29C66/81; B29C66/812; B29C66/8126; B29C66/81261; B29C66/81262; B29C66/814; B29C66/8141; B29C66/81411; B29C66/81415; B29C66/81417; B29C66/81421; B29C66/81422; B29C66/81423; B29C66/81431; B29C66/818; B29C66/8181; B29C66/81811; B29C66/8187; B29C66/81871; B29C66/83; B29C66/832; B29C66/8322; B29C66/8324; B29C65/3608; B29C65/3684; B29C66/8122; B29C66/84; B29C66/849; B29L; B29L2031/00; B29L2031/712; B29L2031/7158
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-08-06 | 1972-02-05 | 1972-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-08-06 | 1976-02-05 | 1976-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-08-06 | 1980-02-05 | 1980-08-06 | $7700.00 | Window Closed / Lapsed |