US2858398A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Infra-red sensitive photocells
Assignee: Hupp Corp
•
Filing: 1954-06-08
•
Granted: 1958-10-28
•
Expires: 1974-06-08
Abstract
No abstract record available.
Inventors
- 👤 Yves A Rocard
- 👤 Bernhard E Bartels
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:33
CPC Classifications
H; H01; H01J; H01J40/00; H01J40/16; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49082
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1486940A
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US1764368A
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US2236708A
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US2447158A
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US2448517A
Cited
US2496303A
Cited
US2668967A
Cited
US2544261A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-10-27 | 1962-04-28 | 1962-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-27 | 1966-04-28 | 1966-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-27 | 1970-04-28 | 1970-10-28 | $7700.00 | Window Closed / Lapsed |