US1638547A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Locking mechanism for window sashes
Assignee: AUSTRAL WINDOW Co
•
Filing: 1922-09-23
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Granted: 1927-08-09
•
Expires: 1942-09-23
Abstract
No abstract record available.
Inventors
- 👤 Winter W Myers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 04:02
CPC Classifications
E; E05; E05F; E05F11/00; E05Y; E05Y2900/00; E05Y2900/10; E05Y2900/13; E05Y2900/148; Y; Y10; Y10S; Y10S292/00; Y10S292/31; Y10T; Y10T292/00; Y10T292/08; Y10T292/0911; Y10T292/0926; Y10T292/0928; Y10T292/0931; Y10T292/0934
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1930-08-08 | 1931-02-07 | 1931-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1934-08-08 | 1935-02-07 | 1935-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1938-08-08 | 1939-02-07 | 1939-08-09 | $7700.00 | Window Closed / Lapsed |