Patent US1557327A successfully refreshed from Google Patents.
US1557327A
Expired / Lapsed
US
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Springless automatic sash lock
Assignee: Individual
•
Filing: 1921-11-17
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Granted: 1925-10-13
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Expires: 1941-11-17
Abstract
No abstract record available.
Inventors
- 👤 James L Powell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:47
CPC Classifications
E; E05; E05B; E05B65/00; E05B65/08; E05B65/0858; Y; Y10; Y10T; Y10T292/00; Y10T292/08; Y10T292/0801; Y10T292/0825; Y10T292/0826; Y10T292/0833; Y10T292/0911; Y10T292/0937; Y10T292/0938; Y10T292/0944; Y10T292/1043; Y10T292/1063; Y10T292/1064; Y10T292/1072
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) | 1928-10-12 | 1929-04-13 | 1929-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1932-10-12 | 1933-04-13 | 1933-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1936-10-12 | 1937-04-13 | 1937-10-13 | $7700.00 | Window Closed / Lapsed |