US2763428A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fan safety guard attachment
Assignee: Individual
•
Filing: 1954-10-01
•
Granted: 1956-09-18
•
Expires: 1974-10-01
Abstract
No abstract record available.
Inventors
- 👤 Robert D Selah
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:54
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)
US474710A
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US692404A
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US914413A
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US1114459A
Cited
US1120894A
Cited
US1228853A
Cited
US1633988A
Cited
US1751793A
Cited
FR692761A
Cited
US2036478A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-09-18 | 1960-03-19 | 1960-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-09-18 | 1964-03-19 | 1964-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-09-18 | 1968-03-19 | 1968-09-18 | $7700.00 | Window Closed / Lapsed |