Patent US3483997A successfully refreshed from Google Patents.
US3483997A
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Test tube rack and test tube capping devices
Assignee: HARRY W RITTER
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Filing: 1967-07-03
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Granted: 1969-12-16
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Expires: 1987-07-03
Abstract
No abstract record available.
Inventors
- 👤 Harry W Ritter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:35
CPC Classifications
B; B01; B01L; B01L9/00; B01L9/06; C; C12; C12M; C12M23/00; C12M23/02; C12M23/08; C12M23/38
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US561191A
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US1520088A
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US1659333A
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US2056253A
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US2576580A
Cited
US2710694A
Cited
US2970700A
Cited
FR1315748A
Cited
US3191790A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-15 | 1973-06-16 | 1973-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-15 | 1977-06-16 | 1977-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-15 | 1981-06-16 | 1981-12-16 | $7700.00 | Window Closed / Lapsed |