US1991397A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metallic frame structure
Assignee: HENRY L SCHROEDER
•
Filing: 1932-12-31
•
Granted: 1935-02-19
•
Expires: 1952-12-31
Abstract
No abstract record available.
Inventors
- 👤 Herman W Lampman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 09:55
CPC Classifications
A; A47; A47B; A47B47/00; A47B47/02; A47B47/021; A47B47/028; A21; A21B; A21B3/00; A47B55/00
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) | 1938-02-18 | 1938-08-20 | 1939-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1942-02-18 | 1942-08-20 | 1943-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1946-02-18 | 1946-08-20 | 1947-02-19 | $7700.00 | Window Closed / Lapsed |