US3407279A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High frequency heating apparatus
Assignee: Rudd Melikian Inc
•
Filing: 1965-10-08
•
Granted: 1968-10-22
•
Expires: 1985-10-08
Abstract
No abstract record available.
Inventors
- 👤 Robert L Greenberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:39
CPC Classifications
H; H05; H05B; H05B6/00; H05B6/64; H05B6/6435; H05B6/642; H05B6/80; H05B6/808
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3081392A
Cited
US3225302A
Cited
US3195013A
Cited
US3168637A
Cited
US3281568A
Cited
US3317699A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-10-22 | 1972-04-22 | 1972-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-22 | 1976-04-22 | 1976-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-22 | 1980-04-22 | 1980-10-22 | $7700.00 | Window Closed / Lapsed |