Patent US3237132A successfully refreshed from Google Patents.
US3469823A
Expired / Lapsed
US
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Handrail post fitting
Assignee: WILLIAM J HORGAN JR
•
Filing: 1968-06-18
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Granted: 1969-09-30
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Expires: 1988-06-18
Abstract
No abstract record available.
Inventors
- 👤 Louis Blum
- 👤 William J Horgan Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:44
CPC Classifications
E; E04; E04F; E04F11/00; E04F11/18; E04F11/181; E04F2011/1868; E04F2011/187; Y; Y10; Y10T; Y10T403/00; Y10T403/55; Y10T403/557; Y10T403/70; Y10T403/7075; Y10T403/7077
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1926798A
Cited
US2003144A
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US2238561A
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US2496032A
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US2666590A
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US3174727A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-29 | 1973-03-31 | 1973-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-29 | 1977-03-31 | 1977-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-29 | 1981-03-31 | 1981-09-30 | $7700.00 | Window Closed / Lapsed |