US3133490A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for developing radiographic films
Assignee: Individual
•
Filing: 1961-01-19
•
Granted: 1964-05-19
•
Expires: 1981-01-19
Abstract
No abstract record available.
Inventors
- 👤 Arthur W Buck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:21
CPC Classifications
G; G03; G03D; G03D13/00; G03D13/02; G03D3/00; G03D3/02; G03D3/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1772834A
Cited
US2810572A
Cited
US2912915A
Cited
US2913975A
Cited
US2986988A
Cited
AT208222B
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-05-19 | 1967-11-18 | 1968-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-19 | 1971-11-18 | 1972-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-19 | 1975-11-18 | 1976-05-19 | $7700.00 | Window Closed / Lapsed |