US3370701A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Card file
Assignee: DBS Inc
•
Filing: 1965-06-04
•
Granted: 1968-02-27
•
Expires: 1985-06-04
Abstract
No abstract record available.
Inventors
- 👤 John J Van Acker
- 👤 Darwin S Crouser
- 👤 Clarence R Korfmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 03:48
CPC Classifications
B; B42; B42F; B42F17/00; B42F17/02; B42F17/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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CH244356A
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US2412246A
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DE828405C
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US2691447A
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US2701635A
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US2860810A
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FI31089A
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US2829767A
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US2919021A
Cited
FR1187853A
Cited
US3147151A
Cited
CH378063A
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DE1106983B
Cited
US3164430A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-02-26 | 1971-08-28 | 1972-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-02-26 | 1975-08-28 | 1976-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-02-26 | 1979-08-28 | 1980-02-27 | $7700.00 | Window Closed / Lapsed |