US3049969A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic exposure reader
Assignee: Pako Corp
•
Filing: 1959-04-06
•
Granted: 1962-08-21
•
Expires: 1979-04-06
Abstract
No abstract record available.
Inventors
- 👤 Roy A Clapp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:14
CPC Classifications
G; G03; G03B; G03B27/00; G03B27/72; G03B27/80
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2269161A
Cited
GB460452A
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GB491613A
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US2232373A
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US2352914A
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US2386320A
Cited
US2402660A
Cited
US2566264A
Cited
US2470584A
Cited
US2518947A
Cited
US2607266A
Cited
US2990757A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-08-20 | 1966-02-19 | 1966-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-08-20 | 1970-02-19 | 1970-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-08-20 | 1974-02-19 | 1974-08-21 | $7700.00 | Window Closed / Lapsed |