Patent US2860383A successfully refreshed from Google Patents.
US2860383A
Expired / Lapsed
US
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Foldable platform
Assignee: MIDWEST FOLDING PRODUCTS Mfg CORP
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Filing: 1956-02-28
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Granted: 1958-11-18
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Expires: 1976-02-28
Abstract
No abstract record available.
Inventors
- 👤 Heisler Harold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:45
CPC Classifications
E; E04; E04H; E04H3/00; E04H3/10; E04H3/22; E04H3/24; A; A63; A63J; A63J1/00; Y; Y10; Y10T; Y10T292/00; Y10T292/08; Y10T292/0863; Y10T292/0869
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) | 1961-11-17 | 1962-05-19 | 1962-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-17 | 1966-05-19 | 1966-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-17 | 1970-05-19 | 1970-11-18 | $7700.00 | Window Closed / Lapsed |