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Patent US2662970A successfully refreshed from Google Patents.
US2662970A
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Assignee: Individual
•
Filing: 1952-08-18
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Granted: 1953-12-15
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Expires: 1972-08-18
Abstract
No abstract record available.
Inventors
- 👤 Ralph E Zediker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:31
CPC Classifications
F; F21; F21L; F21L14/00; F21L14/02; F21V; F21V17/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2236435A
Cited
US2489037A
Cited
US2478010A
Cited
US2450141A
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US2591131A
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US2571295A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-12-14 | 1957-06-15 | 1957-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-12-14 | 1961-06-15 | 1961-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-12-14 | 1965-06-15 | 1965-12-15 | $7700.00 | Window Closed / Lapsed |