US2674252A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Collapsible arch support
Assignee: MAGNESIUM PRODUCTS OF MILWAUKE
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Filing: 1950-10-30
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Granted: 1954-04-06
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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 04:45
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
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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 |