US2520504A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric printing
Assignee: WILLIAM C HUEBNER
•
Filing: 1944-11-22
•
Granted: 1950-08-29
•
Expires: 1964-11-22
Abstract
No abstract record available.
Inventors
- 👤 William J Hooper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:21
CPC Classifications
B; B41; B41M; B41M1/00; B41M1/42; Y; Y10; Y10S; Y10S101/00; Y10S101/37
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
DE301508C
Cited
US1600842A
Cited
US1820194A
Cited
US1838218A
Cited
US2042003A
Cited
CH176469A
Cited
US2173032A
Cited
US2065136A
Cited
US2152077A
Cited
US2224391A
Cited
US2451288A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-08-28 | 1954-02-27 | 1954-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-08-28 | 1958-02-27 | 1958-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-08-28 | 1962-02-27 | 1962-08-29 | $7700.00 | Window Closed / Lapsed |