US2522947A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for growing aerobic organisms
Assignee: Weyerhaeuser Timber Co
•
Filing: 1947-03-27
•
Granted: 1950-09-19
•
Expires: 1967-03-27
Abstract
No abstract record available.
Inventors
- 👤 Raymond S Hatch
- 👤 Richard N Hammond
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:33
CPC Classifications
C; C12; C12M; C12M27/00; C12M27/18; C12M27/24; B; B01; B01F; B01F23/00; B01F23/20; B01F23/23; B01F23/233; B01F23/2334; B01F23/23341; B01F23/2336; B01F23/23363; B01F27/00; B01F27/80; B01F27/86; B01F27/861; B01F35/00; B01F35/90; B01F35/93; C12M41/00; C12M41/12; C12M41/18; C12M41/24; B01F2035/98; B01F23/2335; B01F23/23353; B01F27/05; B01F27/11; B01F27/113
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US328585A
Cited
US1876994A
Cited
US1982002A
Cited
US2111726A
Cited
US2244902A
Cited
US2298561A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-09-18 | 1954-03-20 | 1954-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-09-18 | 1958-03-20 | 1958-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-09-18 | 1962-03-20 | 1962-09-19 | $7700.00 | Window Closed / Lapsed |