US2579206A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Swing hinge
Assignee: Harvard Manufacturing Co
•
Filing: 1949-11-03
•
Granted: 1951-12-18
•
Expires: 1969-11-03
Abstract
No abstract record available.
Inventors
- 👤 Hillard J Sands
- 👤 Nathan E Blanke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:53
CPC Classifications
A; A47; A47C; A47C19/00; A47C19/02; A47C19/021; A47C19/022; A47B; A47B23/00; A47B23/02; A47C17/00; A47C17/04; A47C17/32
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US210805A
Cited
US579277A
Cited
US1564668A
Cited
US1199732A
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GB159719A
Cited
DE412299C
Cited
US2523987A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-12-17 | 1955-06-18 | 1955-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-17 | 1959-06-18 | 1959-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-17 | 1963-06-18 | 1963-12-18 | $7700.00 | Window Closed / Lapsed |