US2797778A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Window construction
Assignee: Individual
•
Filing: 1954-06-01
•
Granted: 1957-07-02
•
Expires: 1974-06-01
Abstract
No abstract record available.
Inventors
- 👤 Carl J Wagner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 03:08
CPC Classifications
E; E06; E06B; E06B3/00; E06B3/32; E06B3/34; E06B3/38; E06B3/04; E06B3/06; E06B3/08; E06B3/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1679612A
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US1804787A
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US1940322A
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US1925817A
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US1960920A
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CH162676A
Cited
US2452815A
Cited
US2589685A
Cited
US2559764A
Cited
US2541948A
Cited
US2678478A
Cited
US2689386A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-07-01 | 1960-12-31 | 1961-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-01 | 1964-12-31 | 1965-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-01 | 1968-12-31 | 1969-07-02 | $7700.00 | Window Closed / Lapsed |