Patent US2800852A successfully refreshed from Google Patents.
US2800852A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diffuser for hot air registers and the like
Assignee: Individual
•
Filing: 1954-06-15
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Granted: 1957-07-30
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Expires: 1974-06-15
Abstract
No abstract record available.
Inventors
- 👤 Shaberman Benjamin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 15:14
CPC Classifications
F; F24; F24F; F24F13/00; F24F13/02; F24F13/06; F24F13/072
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US126373A
Cited
US172108A
Cited
US562530A
Cited
US716450A
Cited
US1429811A
Cited
US1488694A
Cited
US1679507A
Cited
US2679202A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-07-29 | 1961-01-28 | 1961-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-29 | 1965-01-28 | 1965-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-29 | 1969-01-28 | 1969-07-30 | $7700.00 | Window Closed / Lapsed |