Patent US2048131A successfully refreshed from Google Patents.
US2048131A
Expired / Lapsed
US
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Adjusting hardware for sashes and the like
Assignee: CHARLES A ARMSTRONG
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Filing: 1934-04-16
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Granted: 1936-07-21
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Expires: 1954-04-16
Abstract
No abstract record available.
Inventors
- 👤 Madsen Sern
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:34
CPC Classifications
E; E05; E05F; E05F11/00; E05F11/02; E05F11/04; E05F11/06; F; F16; F16H; F16H19/00; F16H19/02; F16H19/06; F16H19/0636
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) | 1939-07-21 | 1940-01-20 | 1940-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1943-07-21 | 1944-01-20 | 1944-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1947-07-21 | 1948-01-20 | 1948-07-21 | $7700.00 | Window Closed / Lapsed |