US2447833A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Attachable light for sewing machines
Assignee: Individual
•
Filing: 1944-03-07
•
Granted: 1948-08-24
•
Expires: 1964-03-07
Abstract
No abstract record available.
Inventors
- 👤 Auer John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 03:39
CPC Classifications
D; D05; D05B; D05B79/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1285840A
Cited
US1470432A
Cited
US1609147A
Cited
US1846345A
Cited
US1955284A
Cited
US2164529A
Cited
US2253164A
Cited
US2292038A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-08-24 | 1952-02-23 | 1952-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-08-24 | 1956-02-23 | 1956-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-08-24 | 1960-02-23 | 1960-08-24 | $7700.00 | Window Closed / Lapsed |