US2604528A
Expired / Lapsed
US
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Photoelectric measurement translating means
Assignee: ILLINOIS TESTING LABORATORIES
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Filing: 1947-10-28
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Granted: 1952-07-22
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Expires: 1967-10-28
Abstract
No abstract record available.
Inventors
- 👤 Alfred A Obermaier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:05
CPC Classifications
G; G01; G01D; G01D5/00; G01D5/12; G01D5/244; G01D5/246; G01D5/26; G01D5/32; G01D5/34; G01D5/347; G01D5/34776; G01D5/34784
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1750242A
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US1672671A
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GB342734A
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US2176720A
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US2133241A
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US2252083A
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US2208147A
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US2431591A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-07-22 | 1956-01-21 | 1956-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-07-22 | 1960-01-21 | 1960-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-07-22 | 1964-01-21 | 1964-07-22 | $7700.00 | Window Closed / Lapsed |