US2756349A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light integrating means for photocell circuit
Assignee: MICRO BALANCING Inc
•
Filing: 1953-07-23
•
Granted: 1956-07-24
•
Expires: 1973-07-23
Abstract
No abstract record available.
Inventors
- 👤 Frank Karl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 05:54
CPC Classifications
H; H01; H01J; H01J40/00; Y; Y10; Y10S; Y10S40/00; Y10S40/902
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2046714A
Cited
US2194910A
Cited
US2389617A
Cited
US2565716A
Cited
US2612817A
Cited
US2489076A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-07-24 | 1960-01-23 | 1960-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-07-24 | 1964-01-23 | 1964-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-07-24 | 1968-01-23 | 1968-07-24 | $7700.00 | Window Closed / Lapsed |