US3539549A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recovery of protein from bone
Assignee: AMERICAN BIOTHERM COMPANY LLC
•
Filing: 1969-02-27
•
Granted: 1970-11-10
•
Expires: 1989-02-27
Abstract
No abstract record available.
Inventors
- 👤 Charles Greenfield
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:40
CPC Classifications
A; A23; A23J; A23J1/00; A23J1/10; Y; Y10; Y10S; Y10S530/00; Y10S530/827; Y10S530/84
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US781880A
Cited
US878930A
Cited
GB148161A
Cited
US1761362A
Cited
US2635104A
Cited
GB775003A
Cited
US3345353A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-11-09 | 1974-05-11 | 1974-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-09 | 1978-05-11 | 1978-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-09 | 1982-05-11 | 1982-11-10 | $7700.00 | Window Closed / Lapsed |