Patent US1889306A successfully refreshed from Google Patents.
US1889306A
Expired / Lapsed
US
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Light control for photographic printing machines
Assignee: PATHE EXCHANGE Inc
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Filing: 1928-03-21
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Granted: 1932-11-29
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Expires: 1948-03-21
Abstract
No abstract record available.
Inventors
- 👤 Albert L Adatte
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:37
CPC Classifications
G; G03; G03B; G03B27/00; G03B27/02; G03B27/14; G03B27/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1935-11-29 | 1936-05-30 | 1936-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1939-11-29 | 1940-05-30 | 1940-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1943-11-29 | 1944-05-30 | 1944-11-29 | $7700.00 | Window Closed / Lapsed |