Patent US2863988A successfully refreshed from Google Patents.
US2863988A
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US
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Photoflash unit
Assignee: Kalart Co Inc
•
Filing: 1954-01-22
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Granted: 1958-12-09
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Expires: 1974-01-22
Abstract
No abstract record available.
Inventors
- 👤 Schwartz Morris
- 👤 Edward K Kaprelian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:16
CPC Classifications
G; G03; G03B; G03B15/00; G03B15/02; G03B15/03; G03B15/04; G03B15/0442
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB191001076A
Cited
US2099767A
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US2234474A
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US2329011A
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US2279933A
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US2584858A
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US2602879A
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US2595318A
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US2766371A
Cited
US2747076A
Cited
US2671614A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-12-08 | 1962-06-09 | 1962-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-08 | 1966-06-09 | 1966-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-08 | 1970-06-09 | 1970-12-09 | $7700.00 | Window Closed / Lapsed |