US3462336A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Induction heating process
Assignee: Individual
•
Filing: 1968-05-17
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Granted: 1969-08-19
•
Expires: 1988-05-17
Abstract
No abstract record available.
Inventors
- 👤 Alfred F Leatherman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:38
CPC Classifications
B; B29; B29C; B29C66/00; B29C66/50; B29C66/51; B29C66/54; B29C65/00; B29C65/02; B29C65/34; B29C65/36; B29C65/3604; B29C65/3608; B29C65/3612; B29C65/3644; B29C65/3668; B29C65/3672; B29C65/3676; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/1122; B29C66/61; B29C66/63; B29C66/80; B29C66/81; B29C66/814; B29C66/8141; B29C66/81411; B29C66/81415; B29C66/81417; B29C66/81421; B29C66/81423; B29C66/81431; B29C66/818; B29C66/8181; B29C66/8187; B29C66/81871; B29C66/82; B29C66/822; B29C66/8221; B29C66/8226; B29C66/82261; B29C66/83; B29C66/832; B29C66/8324; B29C66/83241; B29C66/812; B29C66/8122
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2475348A
Cited
US3367808A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-08-18 | 1973-02-17 | 1973-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-08-18 | 1977-02-17 | 1977-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-08-18 | 1981-02-17 | 1981-08-19 | $7700.00 | Window Closed / Lapsed |