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US1824813A
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Assignee: Individual
•
Filing: 1929-02-08
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Granted: 1931-09-29
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Expires: 1949-02-08
Abstract
No abstract record available.
Inventors
- 👤 Matthew M Friedemann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 10:50
CPC Classifications
A; A47; A47F; A47F5/00; A47F5/04; F; F21; F21V; F21V33/00; F21V33/0004; F21V33/0012; F21W; F21W2131/00; F21W2131/40; F21W2131/405
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) | 1934-09-28 | 1935-03-30 | 1935-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1938-09-28 | 1939-03-30 | 1939-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1942-09-28 | 1943-03-30 | 1943-09-29 | $7700.00 | Window Closed / Lapsed |