Patent US2498968A successfully refreshed from Google Patents.
US2498968A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fan guard mounting
Assignee: Individual
•
Filing: 1945-03-07
•
Granted: 1950-02-28
•
Expires: 1965-03-07
Abstract
No abstract record available.
Inventors
- 👤 John H Viewegh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:59
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/70; F04D29/701; F04D29/703
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US782816A
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US1355145A
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US1578361A
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US1784516A
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US1846634A
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US1871625A
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US2017431A
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US2010804A
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US2258325A
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US2345516A
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US2389824A
Cited
US2421833A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-02-27 | 1953-08-29 | 1954-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-02-27 | 1957-08-29 | 1958-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-02-27 | 1961-08-29 | 1962-02-28 | $7700.00 | Window Closed / Lapsed |