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Patent US2887861A successfully refreshed from Google Patents.
US2887861A
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US
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Flashlight bulb contact cleaner
Assignee: Individual
•
Filing: 1955-05-25
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Granted: 1959-05-26
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Expires: 1975-05-25
Abstract
No abstract record available.
Inventors
- 👤 Frederick W Yessel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:01
CPC Classifications
G; G03; G03B; G03B15/00; G03B15/02; G03B15/03; G03B15/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1569639A
Cited
US1584539A
Cited
US1770902A
Cited
US2477895A
Cited
US2490020A
Cited
US2479726A
Cited
US2600789A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-05-25 | 1962-11-24 | 1963-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-25 | 1966-11-24 | 1967-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-25 | 1970-11-24 | 1971-05-26 | $7700.00 | Window Closed / Lapsed |