US2683797A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for producing controlled lighting effects
Assignee: Individual
•
Filing: 1951-04-30
•
Granted: 1954-07-13
•
Expires: 1971-04-30
Abstract
No abstract record available.
Inventors
- 👤 Harlow B Grow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:58
CPC Classifications
H; H04; H04N; H04N5/00; H04N5/222
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US745488A
Cited
US777116A
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US1031542A
Cited
US1483710A
Cited
US1372969A
Cited
US1649689A
Cited
US2053155A
Cited
US2244687A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-07-12 | 1958-01-11 | 1958-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-07-12 | 1962-01-11 | 1962-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-07-12 | 1966-01-11 | 1966-07-13 | $7700.00 | Window Closed / Lapsed |