US3527580A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Charcoal briquette and manufacture thereof
Assignee: RUSSELL W BONLIE
•
Filing: 1967-03-06
•
Granted: 1970-09-08
•
Expires: 1987-03-06
Abstract
No abstract record available.
Inventors
- 👤 Russell W Bonlie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 06:15
CPC Classifications
B; B30; B30B; B30B11/00; B30B11/16; B30B15/00; B30B15/0005; C; C10; C10L; C10L5/00; C10L5/02; C10L5/26; C10L5/32; C10L5/40; C10L5/44; Y; Y02; Y02E; Y02E50/00; Y02E50/10; Y02E50/30
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) | 1973-09-07 | 1974-03-09 | 1974-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-07 | 1978-03-09 | 1978-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-07 | 1982-03-09 | 1982-09-08 | $7700.00 | Window Closed / Lapsed |