Patent US3225186A successfully refreshed from Google Patents.
US3225186A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic lamps
Assignee: PRODUCT RES ASSOCIATES Inc
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Filing: 1961-07-03
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Granted: 1965-12-21
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Expires: 1981-07-03
Abstract
No abstract record available.
Inventors
- 👤 Edward T Duncan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 07:40
CPC Classifications
F; F21; F21S; F21S6/00; F21S6/001; F21L; F21L4/00; F21L4/08; F21S10/00; F21S10/04; F21S9/00; F21S9/02
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
110 words
A LAMP UNIT COMPRISING A CASING, A CONNECTOR MOUNTED IN THE CASING PROVIDED WITH A PLURALITY OF CONTACTS ADAPTED TO ENGAGE SIMILAR CONTACTS IN A SECOND CONNECTOR, A RECHARGEABLE CELL IN THE CASING, A LAMP SOCKET COMPRISING SPACED CONTACTS MOUNTED IN THE CASING, AN ELECTRICAL CONNECTION FROM ONE OF THE LAMP SOCKET CONTACTS TO A FIRST CONTACT IN THE CONNECTOR, AN ELECTRICAL CONNECTION FROM THE OTHER LAMP SOCKET CONTACT TO ONE POLE OF THE CELL, AN ELECTRICAL CONNECTION FROM THE OTHER POLE OF THE CELL TO A SECOND CONTACT IN THE CONNECTOR, AND AN ELECTRICAL CONNECTION FROM THE FIRST POLE OF THE CELL TO A THIRD CONTACT IN THE CONNECTOR.
References Cited (Backward Citations)
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Cited
US2980889A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-12-20 | 1969-06-21 | 1969-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-20 | 1973-06-21 | 1973-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-20 | 1977-06-21 | 1977-12-21 | $7700.00 | Window Closed / Lapsed |