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Patent US3440385A successfully refreshed from Google Patents.
US3440385A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic ovens
Assignee: Microtherm Ltd
•
Filing: 1966-10-13
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Granted: 1969-04-22
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Expires: 1986-10-13
Abstract
No abstract record available.
Inventors
- 👤 Peter Harold Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:49
CPC Classifications
H; H05; H05B; H05B6/00; H05B6/64; H05B6/642; H05B6/6408; H05B6/6411; H05B6/6426
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2782292A
Cited
FR1249130A
Cited
US3127494A
Cited
US3172987A
Cited
US3127495A
Cited
US3210511A
Cited
US3300615A
Cited
US3281568A
Cited
US3339054A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-04-21 | 1972-10-21 | 1973-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-21 | 1976-10-21 | 1977-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-21 | 1980-10-21 | 1981-04-22 | $7700.00 | Window Closed / Lapsed |