Patent US3429071A successfully refreshed from Google Patents.
US3429071A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sash lock for removable sash windows
Assignee: JAMES C WILBORN AND SONS Inc
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Filing: 1967-04-26
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Granted: 1969-02-25
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Expires: 1987-04-26
Abstract
No abstract record available.
Inventors
- 👤 Irving H Phillips
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:38
CPC Classifications
E; E05; E05D; E05D13/00; E05D13/10; E05D13/12; E05D13/1207; E05Y; E05Y2900/00; E05Y2900/10; E05Y2900/13; E05Y2900/148
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3124849A
Cited
US2828513A
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US3012292A
Cited
US2987758A
Cited
US3233278A
Cited
US3222733A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-02-25 | 1972-08-26 | 1973-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-25 | 1976-08-26 | 1977-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-25 | 1980-08-26 | 1981-02-25 | $7700.00 | Window Closed / Lapsed |