US2447241A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Leonard h
Assignee: —
•
Filing: —
•
Granted: 1948-08-17
•
Expires: 1965-08-17
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:48
CPC Classifications
A; A47; A47L; A47L13/00; A47L13/02; A47L13/04; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9265; Y10S428/932; Y10T; Y10T29/00; Y10T29/14; Y10T29/147; Y10T29/148; Y10T428/00; Y10T428/12; Y10T428/12333; Y10T428/12424
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US477593A
Cited
US1253353A
Cited
US1418800A
Cited
US1469404A
Cited
US1569854A
Cited
US1698512A
Cited
US2016273A
Cited
US2093268A
Cited
US2185027A
Cited
US2208684A
Cited
US2308405A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-08-17 | 1952-02-16 | 1952-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-08-17 | 1956-02-16 | 1956-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-08-17 | 1960-02-16 | 1960-08-17 | $7700.00 | Window Closed / Lapsed |