Patent US2487494A successfully refreshed from Google Patents.
US2487494A
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Method of folding plastic sheet material
Assignee: Individual
•
Filing: 1947-02-06
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Granted: 1949-11-08
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Expires: 1967-02-06
Abstract
No abstract record available.
Inventors
- 👤 Ralph F Taber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:11
CPC Classifications
B; B29; B29C; B29C53/00; B29C53/02; B29C53/04; B29C53/06; B29C53/063; B29C37/00; B29C37/0053; B29C37/0057; Y; Y10; Y10T; Y10T74/00; Y10T74/15; Y10T74/1526; Y10T74/1553; Y10T74/1555; Y10T74/1556
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US503292A
Cited
USRE21479E
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US1006911A
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US2114621A
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US2339304A
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US2431353A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-11-07 | 1953-05-09 | 1953-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-11-07 | 1957-05-09 | 1957-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-11-07 | 1961-05-09 | 1961-11-08 | $7700.00 | Window Closed / Lapsed |