US3430497A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: FRANCIS J TENCZAR
•
Filing: 1967-05-03
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Granted: 1969-03-04
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Expires: 1987-05-03
Abstract
No abstract record available.
Inventors
- 👤 Francis J Tenczar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 07:42
CPC Classifications
G; G01; G01N; G01N1/00; G01N1/02; G01N1/10; B; B01; B01L; B01L3/00; B01L3/56; B01L3/569; G01N1/14; G01N1/28; G01N1/40; G01N1/4077
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-03-03 | 1972-09-02 | 1973-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-03 | 1976-09-02 | 1977-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-03 | 1980-09-02 | 1981-03-04 | $7700.00 | Window Closed / Lapsed |