US3557422A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of forming a pole base structure
Assignee: PFAFF AND KENDALL
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Filing: 1968-09-27
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Granted: 1971-01-26
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Expires: 1988-09-27
Abstract
Abstract A METHOD OF FORMING A POLE BASE STRUCTURE, WHICH IS FORMED IN A SIMPLIFIED FASHION BY OPERATIONS ON SHEETS OF MATERIAL TO ENABLE CONVENIENT ASSEMBLY OF A STRONG AND DURABLE POLE BASE STRUCTURE, COMPRISING FORMING TRANSVERSE CUTS IN SHEETS OF MATERIAL TO FORM CUT ON SIDE PANEL SEGMENTS, BENDING END SEGMENTS AND CRIMPING PORTIONS THEREOF, PLACING THE CRIMPED SIDE PANELS ADJACENT CUT SIDE PANEL SEGMENTS AND INTERFITTING SAID CRIMPED AND CUT SIDE SEGMENTS.
Inventors
- 👤 Henry C Pfaff Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:55
CPC Classifications
E; E04; E04H; E04H12/00; E04H12/02; E04H12/08; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49616; Y10T29/49623; Y10T29/49631; Y10T29/49789; Y10T29/49796
Claims Analysis
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-25 | 1974-07-27 | 1975-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-25 | 1978-07-27 | 1979-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-25 | 1982-07-27 | 1983-01-26 | $7700.00 | Window Closed / Lapsed |