US2519337A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary developing tank
Assignee: Individual
•
Filing: 1946-04-11
•
Granted: 1950-08-22
•
Expires: 1966-04-11
Abstract
No abstract record available.
Inventors
- 👤 Sydney S Alberts
- 👤 Arthur S Alberts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:40
CPC Classifications
G; G03; G03D; G03D13/00; G03D13/02; G03D13/04; G03D13/043; G03D13/08; G03D13/14; G03D13/147
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US187163A
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US750665A
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US733244A
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US778906A
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US932265A
Cited
DE417043C
Cited
FR611511A
Cited
US2056298A
Cited
US2112605A
Cited
US2119230A
Cited
US2399617A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-08-21 | 1954-02-20 | 1954-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-08-21 | 1958-02-20 | 1958-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-08-21 | 1962-02-20 | 1962-08-22 | $7700.00 | Window Closed / Lapsed |