Patent US2847580A successfully refreshed from Google Patents.
US2847580A
Expired / Lapsed
US
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Roll film holder for radiographic work
Assignee: PIPELINE X RAY SERVICE
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Filing: 1956-08-06
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Granted: 1958-08-12
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Expires: 1976-08-06
Abstract
No abstract record available.
Inventors
- 👤 Arvanetakis Kiryako
- 👤 Clarence W Radcliff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:20
CPC Classifications
G; G03; G03B; G03B37/00; G03B37/005; G03B42/00; G03B42/02; G03B42/021
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1536335A
Cited
US2381556A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-08-11 | 1962-02-10 | 1962-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-11 | 1966-02-10 | 1966-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-11 | 1970-02-10 | 1970-08-12 | $7700.00 | Window Closed / Lapsed |