US2528909A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Work holder
Assignee: Individual
•
Filing: 1946-07-11
•
Granted: 1950-11-07
•
Expires: 1966-07-11
Abstract
No abstract record available.
Inventors
- 👤 Edwin W Plumb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:07
CPC Classifications
B; B23; B23Q; B23Q1/00; B23Q1/25; B23Q1/44; B23Q1/50; B23Q1/54; B23Q3/00; B23Q3/02; B23Q3/06; Y; Y10; Y10T; Y10T408/00; Y10T408/55; Y10T408/563; Y10T408/5638
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US606317A
Cited
US670890A
Cited
US722677A
Cited
US2260157A
Cited
US2236881A
Cited
US2136140A
Cited
US2276819A
Cited
US2369346A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-11-06 | 1954-05-08 | 1954-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-11-06 | 1958-05-08 | 1958-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-11-06 | 1962-05-08 | 1962-11-07 | $7700.00 | Window Closed / Lapsed |