Patent US2621900A successfully refreshed from Google Patents.
US2621900A
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Assignee: TURBO RAY Inc
•
Filing: 1948-02-25
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Granted: 1952-12-16
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Expires: 1968-02-25
Abstract
No abstract record available.
Inventors
- 👤 Gustave A Borg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:53
CPC Classifications
F; F28; F28D; F28D1/00; F28D1/02; F28D1/04; F28D1/053; F28D1/05316; F28D1/05333
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1927991A
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US1886645A
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US1913573A
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US1991339A
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US2188176A
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US2144030A
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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) | 1955-12-16 | 1956-06-16 | 1956-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-16 | 1960-06-16 | 1960-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-16 | 1964-06-16 | 1964-12-16 | $7700.00 | Window Closed / Lapsed |