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The ornamental design for a flat umbrella shaft, as shown and described.
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FIG. 1 is a perspective view of a flat umbrella shaft showing my new design.
FIG. 2 is a front plan view thereof.
FIG. 3 is a rear plan view thereof.
FIG. 4 is a top plan view thereof.
FIG. 5 is a bottom plan view thereof.
FIG. 6 is a left side plan view thereof.
FIG. 7 is a right side plan view thereof.
FIG. 8 is an enlarged view of FIG. 6.
FIG. 9 is an enlarged view of FIG. 7; and,
FIG. 10 is an enlarged side view of each concentric segment of the shaft shown separately for clarity of illustration.
| Patent | Priority | Assignee | Title |
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| D622953, | Oct 24 2008 | GALTECH COMPUTER CORPORATION | Umbrella shaft |
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