Patent US3667220A successfully refreshed from Google Patents.
Patent US2577705A successfully refreshed from Google Patents.
US2577705A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable feed mechanism for sewing machines
Assignee: Singer Co
•
Filing: 1949-09-28
•
Granted: 1951-12-04
•
Expires: 1969-09-28
Abstract
No abstract record available.
Inventors
- 👤 Robert L Hoffmeister
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:57
CPC Classifications
D; D05; D05B; D05B27/00; D05B27/22; D05B73/00; D05B73/005; Y; Y10; Y10T; Y10T74/00; Y10T74/21; Y10T74/2173; Y10T74/2179
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-12-03 | 1955-06-04 | 1955-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-03 | 1959-06-04 | 1959-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-03 | 1963-06-04 | 1963-12-04 | $7700.00 | Window Closed / Lapsed |