Patent US3591713A successfully refreshed from Google Patents.
US2831979A
Expired / Lapsed
US
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X-ray film-handling device
Assignee: Pako Corp
•
Filing: 1952-02-21
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Granted: 1958-04-22
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Expires: 1972-02-21
Abstract
No abstract record available.
Inventors
- 👤 Karl J Kallenberg
- 👤 Sardeson Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:54
CPC Classifications
G; G03; G03B; G03B42/00; G03B42/02; G03B42/021
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1179885A
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GB131163A
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US1699507A
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US2095849A
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US2250677A
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US2375555A
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US2391191A
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US2359582A
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US2468381A
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US2617944A
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US2619175A
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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) | 1961-04-21 | 1961-10-21 | 1962-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-21 | 1965-10-21 | 1966-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-21 | 1969-10-21 | 1970-04-22 | $7700.00 | Window Closed / Lapsed |