Patent US1936268A successfully refreshed from Google Patents.
US1936268A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metallic window structure
Assignee: Truscon Steel Co
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Filing: 1930-05-16
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Granted: 1933-11-21
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Expires: 1950-05-16
Abstract
No abstract record available.
Inventors
- 👤 Adolf H Schaffert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:51
CPC Classifications
E; E06; E06B; E06B3/00; E06B3/32; E06B3/34; E06B3/42; E06B3/44; E06B2003/4438; E06B2003/4453
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) | 1936-11-20 | 1937-05-22 | 1937-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1940-11-20 | 1941-05-22 | 1941-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1944-11-20 | 1945-05-22 | 1945-11-21 | $7700.00 | Window Closed / Lapsed |