US3525566A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Projection devices and graphic materials therefor
Assignee: Individual
•
Filing: 1968-07-24
•
Granted: 1970-08-25
•
Expires: 1988-07-24
Abstract
No abstract record available.
Inventors
- 👤 Gerald Altman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:13
CPC Classifications
G; G03; G03B; G03B21/00; G03B21/132; G03B21/14; G03B21/20; Y; Y10; Y10S; Y10S353/00; Y10S353/04; Y10S353/05
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE43130C
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US1763482A
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US2167149A
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US2294930A
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US2944463A
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US3277782A
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US3310900A
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US3340765A
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US3293982A
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US3368448A
Cited
US3285126A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-08-24 | 1974-02-23 | 1974-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-08-24 | 1978-02-23 | 1978-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-08-24 | 1982-02-23 | 1982-08-25 | $7700.00 | Window Closed / Lapsed |