US3489499A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic photometric apparatus
Assignee: Polaroid Corp
•
Filing: 1965-12-27
•
Granted: 1970-01-13
•
Expires: 1985-12-27
Abstract
No abstract record available.
Inventors
- 👤 Conrad H Biber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:05
CPC Classifications
G; G01; G01J; G01J1/00; G01J1/42
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1762748A
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US2149250A
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US2453693A
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US2750453A
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US3019700A
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US3049964A
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US3155952A
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US3227056A
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US3208365A
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US3313224A
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US3323430A
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US3321754A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-01-12 | 1973-07-14 | 1974-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-12 | 1977-07-14 | 1978-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-12 | 1981-07-14 | 1982-01-13 | $7700.00 | Window Closed / Lapsed |