US2144255A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Petrie dish
Assignee: Individual
•
Filing: 1938-01-06
•
Granted: 1939-01-17
•
Expires: 1958-01-06
Abstract
No abstract record available.
Inventors
- 👤 Carlos C Carpenter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:11
CPC Classifications
C; C12; C12M; C12M23/00; C12M23/02; C12M23/10; C12M23/22; C12M23/38; C12M33/00; C12M33/04
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) | 1942-01-16 | 1942-07-18 | 1943-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-01-16 | 1946-07-18 | 1947-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-01-16 | 1950-07-18 | 1951-01-17 | $7700.00 | Window Closed / Lapsed |