US4112921B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
US4112921B1 - - Google Patents
Assignee: BIO-ENERGY SYSTEMS Inc ELLENVILLE NY A CORP OF NY
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Filing: 1977-10-27
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Granted: 1985-03-19
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Expires: 1997-10-27
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:47
CPC Classifications
F; F24; F24S; F24S10/00; F24S10/70; F24S10/73; F24S20/00; F24S20/50; F24S20/55; F24S20/60; F24S20/67; F28; F28F; F28F13/00; F28F2013/005; F28F2013/006; Y; Y02; Y02B; Y02B10/00; Y02B10/20; Y02E; Y02E10/00; Y02E10/40; Y02E10/44; Y10; Y10S; Y10S126/00; Y10S126/907
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) | 1988-03-18 | 1988-09-17 | 1989-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-03-18 | 1992-09-17 | 1993-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-03-18 | 1996-09-17 | 1997-03-19 | $7700.00 | Window Closed / Lapsed |