US3473879A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shock wave burner
Assignee: Siemens AG
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Filing: 1968-09-10
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Granted: 1969-10-21
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Expires: 1988-09-10
Abstract
No abstract record available.
Inventors
- 👤 Bertold Berberich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:30
CPC Classifications
F; F23; F23C; F23C15/00; F23C99/00; F23C99/003; H; H01; H01S; H01S3/00; H01S3/0007; F23C2700/00; F23C2700/02; F23C2700/023; F23C2900/00; F23C2900/99003; F23R; F23R2900/00; F23R2900/00006; Y; Y10; Y10S; Y10S65/00; Y10S65/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-20 | 1973-04-21 | 1973-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-20 | 1977-04-21 | 1977-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-20 | 1981-04-21 | 1981-10-21 | $7700.00 | Window Closed / Lapsed |