US2942520A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tissue culture device
Assignee: Individual
•
Filing: 1955-12-20
•
Granted: 1960-06-28
•
Expires: 1975-12-20
Abstract
No abstract record available.
Inventors
- 👤 George G Rose
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:17
CPC Classifications
G; G02; G02B; G02B21/00; G02B21/34; C; C12; C12M; C12M23/00; C12M23/02; C12M23/04; C12M23/22; C12M37/00; C12M37/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US504890A
Cited
US681400A
Cited
US2048128A
Cited
US2144255A
Cited
US2348448A
Cited
US2644452A
Cited
DE936299C
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-28 | 1963-12-28 | 1964-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-28 | 1967-12-28 | 1968-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-28 | 1971-12-28 | 1972-06-28 | $7700.00 | Window Closed / Lapsed |