US2804181A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sliding sash with lubricated bearings
Assignee: Individual
•
Filing: 1954-04-06
•
Granted: 1957-08-27
•
Expires: 1974-04-06
Abstract
No abstract record available.
Inventors
- 👤 Joseph E Haynes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:28
CPC Classifications
E; E06; E06B; E06B3/00; E06B3/32; E06B3/34; E06B3/42; E06B3/44; E06B2003/4438; E06B2003/4453; E06B2003/4492; Y; Y10; Y10S; Y10S16/00; Y10S16/27
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US174029A
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US479324A
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US2116754A
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US2200548A
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US2250723A
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US2375553A
Cited
US2654114A
Cited
US2619205A
Cited
US2638189A
Cited
US2767005A
Cited
US2781112A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-08-26 | 1961-02-25 | 1961-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-26 | 1965-02-25 | 1965-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-26 | 1969-02-25 | 1969-08-27 | $7700.00 | Window Closed / Lapsed |