US2390329A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Darning attachment for sewing machines
Assignee: Individual
•
Filing: 1942-12-18
•
Granted: 1945-12-04
•
Expires: 1962-12-18
Abstract
No abstract record available.
Inventors
- 👤 Walter O Runcie
- 👤 Geza M Keczeli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:43
CPC Classifications
D; D05; D05B; D05B97/00; D05B97/04; D05B3/00; D05B3/24; D05B3/246; D05D; D05D2207/00; D05D2207/02
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) | 1948-12-03 | 1949-06-04 | 1949-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1952-12-03 | 1953-06-04 | 1953-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1956-12-03 | 1957-06-04 | 1957-12-04 | $7700.00 | Window Closed / Lapsed |