US2657301A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic heat-treating device
Assignee: INTERNATION HARVESTER CO
•
Filing: 1948-09-08
•
Granted: 1953-10-27
•
Expires: 1968-09-08
Abstract
No abstract record available.
Inventors
- 👤 Homer F Kincaid
- 👤 John D Graham
- 👤 Delos J Reynolds
- 👤 Edward M Wharff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:58
CPC Classifications
H; H05; H05B; H05B6/00; H05B6/02; H05B6/10; H05B6/101; H05B6/102; H05B6/06; H05B6/103
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-10-26 | 1957-04-27 | 1957-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-10-26 | 1961-04-27 | 1961-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-10-26 | 1965-04-27 | 1965-10-27 | $7700.00 | Window Closed / Lapsed |