US3812016A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Culture-growing apparatus
Assignee: Chemap AG
•
Filing: 1972-07-21
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Granted: 1974-05-21
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Expires: 1992-07-21
Abstract
Abstract A VESSEL HAS A CHAMBER IN WHICH MEDIA REQUISITE FOR GROWING OF A DESIRED CULTURE ARE TO BE ACCOMMODATED. A HORIZONTAL SHAFT EXTENDS THROUGH THIS CHAMBER AND IS ROTATABLE ABOUT ITS OWN LONGITUDINAL AXIS. A SPIRAL CARRIER ELEMENT IS MOUNTED ON THE SHAFT FOR ROTATION THEREWITH, BEING COMPOSED OF A PLURALITY OF CONVOLUTIONS AND CONSISTING OF GLASS, OF METAL COATED WITH VITREOUS ENAMEL OR OF SYNTHETIC PLASTIC.
Inventors
- 👤 H Muller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 03:57
CPC Classifications
C; C12; C12M; C12M27/00; C12M27/14; C12M25/00; C12M25/06
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) | 1977-05-20 | 1977-11-19 | 1978-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-05-20 | 1981-11-19 | 1982-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-05-20 | 1985-11-19 | 1986-05-21 | $7700.00 | Window Closed / Lapsed |