Patent US1420159A successfully refreshed from Google Patents.
Patent US4590579A successfully refreshed from Google Patents.
Patent US2403174A successfully refreshed from Google Patents.
Patent US702334A successfully refreshed from Google Patents.
Patent US2674252A successfully refreshed from Google Patents.
US2674252A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Collapsible arch support
Assignee: MAGNESIUM PRODUCTS OF MILWAUKE
•
Filing: 1950-10-30
•
Granted: 1954-04-06
•
Expires: 1970-10-30
Abstract
No abstract record available.
Inventors
- 👤 Thomas R Finlayson
- 👤 Bert E Lee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:33
CPC Classifications
E; E04; E04H; E04H15/00; E04H15/32; E04H15/34; E04H15/44; E04H15/48; E04H15/50; E04H15/52; Y; Y10; Y10S; Y10S135/00; Y10S135/906
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) | 1957-04-05 | 1957-10-05 | 1958-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-05 | 1961-10-05 | 1962-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-05 | 1965-10-05 | 1966-04-06 | $7700.00 | Window Closed / Lapsed |