Patent US2506401A successfully refreshed from Google Patents.
US2506401A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Film processing rack
Assignee: Individual
•
Filing: 1944-11-06
•
Granted: 1950-05-02
•
Expires: 1964-11-06
Abstract
No abstract record available.
Inventors
- 👤 Winans Fonville
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 11:49
CPC Classifications
G; G03; G03D; G03D13/00; G03D13/02; G03D13/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US404605A
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DE508132C
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US681658A
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GB190122578A
Cited
US711978A
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US1027626A
Cited
US1782068A
Cited
US1909566A
Cited
US2082876A
Cited
US2122723A
Cited
US2120706A
Cited
US2288325A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-05-01 | 1953-10-31 | 1954-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-05-01 | 1957-10-31 | 1958-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-05-01 | 1961-10-31 | 1962-05-02 | $7700.00 | Window Closed / Lapsed |