Patent US2241976A successfully refreshed from Google Patents.
US3518487A
Expired / Lapsed
US
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Photoflashing circuit device
Assignee: Toshiba Corp
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Filing: 1968-01-24
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Granted: 1970-06-30
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Expires: 1988-01-24
Abstract
No abstract record available.
Inventors
- 👤 Masashi Tanaka
- 👤 Osamu Nomura
- 👤 Hiyutaro Kawamura
- 👤 Takayuki Iida
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:53
CPC Classifications
H; H05; H05B; H05B41/00; H05B41/14; H05B41/30; G; G03; G03B; G03B15/00; G03B15/02; G03B15/03; G03B15/04; G03B15/0452; G03B15/0457
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-06-29 | 1973-12-29 | 1974-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-06-29 | 1977-12-29 | 1978-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-06-29 | 1981-12-29 | 1982-06-30 | $7700.00 | Window Closed / Lapsed |