Patent US2481133A successfully refreshed from Google Patents.
US2481133A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chair
Assignee: Individual
•
Filing: 1945-10-01
•
Granted: 1949-09-06
•
Expires: 1965-10-01
Abstract
No abstract record available.
Inventors
- 👤 Frank J Luketa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:18
CPC Classifications
A; A47; A47C; A47C1/00; A47C1/02; A47C1/031; A47C1/036; A47C1/037; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18568; Y10T74/18576; Y10T74/18648
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US238711A
Cited
US491651A
Cited
US513169A
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US614666A
Cited
US633087A
Cited
GB191228096A
Cited
US1182125A
Cited
US1262216A
Cited
GB421430A
Cited
US2133471A
Cited
US2355762A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-09-05 | 1953-03-07 | 1953-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-09-05 | 1957-03-07 | 1957-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-09-05 | 1961-03-07 | 1961-09-06 | $7700.00 | Window Closed / Lapsed |