US1214229A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for carbonating lead oxid.
Assignee: Individual
•
Filing: 1916-05-31
•
Granted: 1917-01-30
•
Expires: 1936-05-31
Abstract
No abstract record available.
Inventors
- 👤 Frederick Herbert Sharpe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 04:22
CPC Classifications
B; B01; B01F; B01F23/00; B01F23/20; B01F23/23; B01F23/232; B01F23/2323; B01F23/23231; B01F23/232311
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) | 1920-01-30 | 1920-07-31 | 1921-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1924-01-30 | 1924-07-31 | 1925-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1928-01-30 | 1928-07-31 | 1929-01-30 | $7700.00 | Window Closed / Lapsed |