US3469053A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Microwave kiln
Assignee: Individual
•
Filing: 1965-10-19
•
Granted: 1969-09-23
•
Expires: 1985-10-19
Abstract
No abstract record available.
Inventors
- 👤 Melvin L Levinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:01
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/01; C04B35/26; C04B33/00; C04B33/22; H; H05; H05B; H05B6/00; H05B6/64; H05B6/80; H05B2206/00; H05B2206/04; H05B2206/046; Y; Y10; Y10S; Y10S65/00; Y10S65/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US875394A
Cited
FR869623A
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US2622187A
Cited
CH268795A
Cited
US2659860A
Cited
FR1113242A
Cited
US2830152A
Cited
US3171009A
Cited
US3177333A
Cited
GB1031760A
Cited
US3288894A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-22 | 1973-03-24 | 1973-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-22 | 1977-03-24 | 1977-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-22 | 1981-03-24 | 1981-09-23 | $7700.00 | Window Closed / Lapsed |