US3440144A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for checking and testing the effectiveness of sterilization
Assignee: HW Andersen Products Inc
•
Filing: 1965-05-21
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Granted: 1969-04-22
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Expires: 1985-05-21
Abstract
No abstract record available.
Inventors
- 👤 Harold W Andersen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:42
CPC Classifications
A; A61; A61L; A61L2/00; A61L2/26; A61L2/28; C; C12; C12Q; C12Q1/00; C12Q1/02; C12Q1/22; Y; Y10; Y10S; Y10S435/00; Y10S435/81; Y10S435/8215; Y10S435/822; Y10S435/832; Y10S435/839; Y10S435/842
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2854384A
Cited
US2950202A
Cited
US3068154A
Cited
US2998306A
Cited
US3239429A
Cited
US3346464A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-04-21 | 1972-10-21 | 1973-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-21 | 1976-10-21 | 1977-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-21 | 1980-10-21 | 1981-04-22 | $7700.00 | Window Closed / Lapsed |