Patent US2918868A successfully refreshed from Google Patents.
US2918868A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cartridge
Assignee: Individual
•
Filing: 1956-04-17
•
Granted: 1959-12-29
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Expires: 1976-04-17
Abstract
No abstract record available.
Inventors
- 👤 Ringdal Lars
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:57
CPC Classifications
F; F42; F42B; F42B8/00; F42B8/02; F42B8/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE74314C
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US97615A
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US352125A
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US392922A
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US1233071A
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GB394037A
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CH238162A
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US2686936A
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BE522888A
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GB732633A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-12-28 | 1963-06-29 | 1963-12-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-12-28 | 1967-06-29 | 1967-12-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-12-28 | 1971-06-29 | 1971-12-29 | $7700.00 | Window Closed / Lapsed |