US2582820A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Web unrolling apparatus
Assignee: JOHN WALDRON Corp
•
Filing: 1947-02-10
•
Granted: 1952-01-15
•
Expires: 1967-02-10
Abstract
No abstract record available.
Inventors
- 👤 Charles A Dickhaut
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:44
CPC Classifications
D; D06; D06B; D06B23/00; D06B23/04; Y; Y10; Y10T; Y10T83/00; Y10T83/465; Y10T83/4749
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US964130A
Cited
US1767728A
Cited
GB331937A
Cited
US1938888A
Cited
DE668530C
Cited
US2217897A
Cited
US2141629A
Cited
US2258298A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-01-14 | 1955-07-16 | 1956-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-01-14 | 1959-07-16 | 1960-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-01-14 | 1963-07-16 | 1964-01-15 | $7700.00 | Window Closed / Lapsed |