Patent US2554620A successfully refreshed from Google Patents.
US2554620A
Expired / Lapsed
US
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Holding device for messageconveying papers
Assignee: Individual
•
Filing: 1947-08-11
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Granted: 1951-05-29
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Expires: 1967-08-11
Abstract
No abstract record available.
Inventors
- 👤 William W Hurtel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:26
CPC Classifications
G; G09; G09F; G09F1/00; G09F1/10; G09F1/14; H; H04; H04L; H04L13/00; H04L13/02; H04L13/06; Y; Y10; Y10T; Y10T24/00; Y10T24/44; Y10T24/44017; Y10T24/44026; Y10T24/44641; Y10T24/44769
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) | 1954-05-28 | 1954-11-27 | 1955-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-28 | 1958-11-27 | 1959-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-28 | 1962-11-27 | 1963-05-29 | $7700.00 | Window Closed / Lapsed |