US2931467A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Structural framework
Assignee: CLARENCE FRANK FENTIMAN
•
Filing: 1954-08-18
•
Granted: 1960-04-05
•
Expires: 1974-08-18
Abstract
No abstract record available.
Inventors
- 👤 Arthur E Fentiman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:01
CPC Classifications
E; E01; E01D; E01D6/00; E01D21/00; E04; E04B; E04B1/00; E04B1/18; E04B1/19; E04B1/1903; E01D2101/00; E01D2101/30; E04B1/1909; E04B2001/1924; E04B2001/1927; E04B2001/193; E04B2001/1957; E04B2001/1966; E04B2001/1975; E04B2001/1981; E04B2001/1987; Y; Y10; Y10T; Y10T403/00; Y10T403/34; Y10T403/341; Y10T403/342; Y10T403/343; Y10T403/344; Y10T403/345; Y10T403/346; Y10T403/61
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB673610A
Cited
US563529A
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US1026845A
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US1070165A
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GB191424087A
Cited
US1444491A
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US1793468A
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FR682854A
Cited
US1946408A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-04-05 | 1963-10-05 | 1964-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-05 | 1967-10-05 | 1968-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-05 | 1971-10-05 | 1972-04-05 | $7700.00 | Window Closed / Lapsed |