US3541978A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stokers
Assignee: Prvni Brnenska Strojirna Zavody Klementa Gottwalda
•
Filing: 1968-07-12
•
Granted: 1970-11-24
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Expires: 1988-07-12
Abstract
No abstract record available.
Inventors
- 👤 Mojmir Stloukal
- 👤 Milan Dolezel
- 👤 Miroslav Benes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:14
CPC Classifications
F; F23; F23H; F23H13/00; F23H2700/00; F23H2700/009
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) | 1973-11-23 | 1974-05-25 | 1974-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-23 | 1978-05-25 | 1978-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-23 | 1982-05-25 | 1982-11-24 | $7700.00 | Window Closed / Lapsed |