US2825000A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic light unit
Assignee: General Electric Co
•
Filing: 1954-10-06
•
Granted: 1958-02-25
•
Expires: 1974-10-06
Abstract
No abstract record available.
Inventors
- 👤 Eric J G Beeson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 04:48
CPC Classifications
H; H01; H01J; H01J61/00; H01J61/02; H01J61/54; H01J61/70; H01J61/80
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2001838A
Cited
US2492142A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-02-24 | 1961-08-26 | 1962-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-02-24 | 1965-08-26 | 1966-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-02-24 | 1969-08-26 | 1970-02-25 | $7700.00 | Window Closed / Lapsed |