US2531659A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mat
Assignee: Individual
•
Filing: 1945-05-23
•
Granted: 1950-11-28
•
Expires: 1965-05-23
Abstract
No abstract record available.
Inventors
- 👤 Watson Frank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:45
CPC Classifications
A; A47; A47L; A47L23/00; A47L23/22; A47L23/24; Y; Y10; Y10T; Y10T428/00; Y10T428/16; Y10T428/24; Y10T428/24058
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US239159A
Cited
US1112649A
Cited
US1352733A
Cited
US1550636A
Cited
US1815558A
Cited
US1966465A
Cited
US2129622A
Cited
US2274468A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-11-27 | 1954-05-29 | 1954-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-11-27 | 1958-05-29 | 1958-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-11-27 | 1962-05-29 | 1962-11-28 | $7700.00 | Window Closed / Lapsed |