Patent US2989774A successfully refreshed from Google Patents.
US2989774A
Expired / Lapsed
US
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Mat handling method and apparatus
Assignee: Industrial Development Co SAL
•
Filing: 1957-03-21
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Granted: 1961-06-27
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Expires: 1977-03-21
Abstract
No abstract record available.
Inventors
- 👤 Harold E Erickson
- 👤 Norman E Nelson
- 👤 Charles V Nelson
- 👤 Dale L Schubert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:07
CPC Classifications
B; B27; B27N; B27N3/00; B27N3/08; B27N3/18; B27N3/183; Y; Y10; Y10T; Y10T83/00; Y10T83/04; Y10T83/0405; Y10T83/0419; Y10T83/0429
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-06-26 | 1964-12-26 | 1965-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-26 | 1968-12-26 | 1969-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-26 | 1972-12-26 | 1973-06-27 | $7700.00 | Window Closed / Lapsed |