US2889590A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sliding window construction
Assignee: Individual
•
Filing: 1956-07-30
•
Granted: 1959-06-09
•
Expires: 1976-07-30
Abstract
No abstract record available.
Inventors
- 👤 Albert A Kunkel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:16
CPC Classifications
E; E06; E06B; E06B3/00; E06B3/32; E06B3/34; E06B3/42; E06B3/46; E06B3/4609; E06B3/4627
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US197813A
Cited
US263670A
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US603597A
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US1303984A
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US942269A
Cited
US2026285A
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US2317312A
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US2288712A
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US2564299A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-06-08 | 1962-12-08 | 1963-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-06-08 | 1966-12-08 | 1967-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-06-08 | 1970-12-08 | 1971-06-09 | $7700.00 | Window Closed / Lapsed |