US3536306A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiflame burners
Assignee: Railway Transport Inst
•
Filing: 1968-04-05
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Granted: 1970-10-27
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Expires: 1988-04-05
Abstract
No abstract record available.
Inventors
- 👤 Konstantin Vasilievi Selivanov
- 👤 Tikhom Alexeevich Vladimirsky
- 👤 Leonid Andreevich Kolesnikov
- 👤 Oleg Efimovich Melnikov
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:00
CPC Classifications
F; F23; F23D; F23D14/00; F23D14/46; F23D14/48; F23D14/58; F23D14/32; F23D99/00; F23D99/002; F23D99/004
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) | 1973-10-26 | 1974-04-27 | 1974-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-26 | 1978-04-27 | 1978-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-26 | 1982-04-27 | 1982-10-27 | $7700.00 | Window Closed / Lapsed |