Patent US2481049A successfully refreshed from Google Patents.
US2481049A
Expired / Lapsed
US
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Apparatus for corrugating sheet material
Assignee: Individual
•
Filing: 1947-04-16
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Granted: 1949-09-06
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Expires: 1967-04-16
Abstract
No abstract record available.
Inventors
- 👤 Alfred J Stamm
- 👤 Turner Harold Dale
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:56
CPC Classifications
B; B29; B29C; B29C53/00; B29C53/22; B29C53/24; B29C53/28; B27; B27D; B27D1/00; B27D1/04; B27D1/08; B27D1/083; B27N; B27N5/00
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) | 1952-09-05 | 1953-03-07 | 1953-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-09-05 | 1957-03-07 | 1957-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-09-05 | 1961-03-07 | 1961-09-06 | $7700.00 | Window Closed / Lapsed |