US3539165A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for treating metallic and nonmetallic materials
Assignee: GLENN R INGELS
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Filing: 1969-06-16
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Granted: 1970-11-10
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Expires: 1989-06-16
Abstract
No abstract record available.
Inventors
- 👤 Glenn R Ingels
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:24
CPC Classifications
C; C23; C23C; C23C8/00; C23C8/06; C21; C21B; C21B13/00; C21B13/0073; C21D; C21D1/00; C21D1/74; C21D1/76; C21D9/00; Y; Y02; Y02P; Y02P10/00; Y02P10/10; Y02P10/134; Y10; Y10S; Y10S261/00; Y10S261/07
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-11-09 | 1974-05-11 | 1974-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-09 | 1978-05-11 | 1978-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-09 | 1982-05-11 | 1982-11-10 | $7700.00 | Window Closed / Lapsed |