Patent US3430774A successfully refreshed from Google Patents.
US3430774A
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Assignee: HENRY E KARKUT Inc
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Filing: 1967-02-03
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Granted: 1969-03-04
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Expires: 1987-02-03
Abstract
No abstract record available.
Inventors
- 👤 Henry E Karkut
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 09:58
CPC Classifications
B; B42; B42F; B42F17/00; B42F17/02; B42F17/08
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 |