US3048897A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Window well cover
Assignee: Individual
•
Filing: 1959-04-07
•
Granted: 1962-08-14
•
Expires: 1979-04-07
Abstract
No abstract record available.
Inventors
- 👤 Herbert J Slade
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:34
CPC Classifications
E; E04; E04F; E04F17/00; E04F17/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2761180A
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US1419490A
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US1840397A
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US2086247A
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US2237564A
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US2622645A
Cited
US2755728A
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US2793688A
Cited
US2854072A
Cited
US2892516A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-08-13 | 1966-02-12 | 1966-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-08-13 | 1970-02-12 | 1970-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-08-13 | 1974-02-12 | 1974-08-14 | $7700.00 | Window Closed / Lapsed |