US2647288A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Window construction
Assignee: Individual
•
Filing: 1950-01-05
•
Granted: 1953-08-04
•
Expires: 1970-01-05
Abstract
No abstract record available.
Inventors
- 👤 Edgar C Richardson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:36
CPC Classifications
E; E06; E06B; E06B3/00; E06B3/32; E06B3/50; E06B3/5054; E06B3/5063
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US833795A
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US848882A
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US958596A
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US1965250A
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US2091036A
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US2169343A
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FR840133A
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US2288558A
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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) | 1956-08-03 | 1957-02-02 | 1957-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-03 | 1961-02-02 | 1961-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-03 | 1965-02-02 | 1965-08-04 | $7700.00 | Window Closed / Lapsed |