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Level using a plumb bob for level pdf#

Y10- TECHNICAL SUBJECTS COVERED BY FORMER USPC.Y- GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS AND DIGESTS.G01C15/00- Surveying instruments or accessories not provided for in groups G01C1/00 - G01C13/00.

G01C- MEASURING DISTANCES, LEVELS OR BEARINGS SURVEYING NAVIGATION GYROSCOPIC INSTRUMENTS PHOTOGRAMMETRY OR VIDEOGRAMMETRY.

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230000021037 unidirectional conjugation Effects 0.000 description 6.

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239000000725 suspension Substances 0.000 claims description 18.

Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.) Filing date Publication date Application filed by Daniel J Greene filed Critical Daniel J Greene Priority to US09/436,173 priority Critical patent/US6397484B1/en Application granted granted Critical Publication of US6397484B1 publication Critical patent/US6397484B1/en Anticipated expiration legal-status Critical Status Expired - Fee Related legal-status Critical Current Links Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Expired - Fee Related Application number US09/436,173 Inventor Daniel J Greene Original Assignee Daniel J Greene Priority date (The priority date is an assumption and is not a legal conclusion.

Level using a plumb bob for level pdf#

Google Patents Laser-emitting plumb-bobĭownload PDF Info Publication number US6397484B1 US6397484B1 US09/436,173 US43617399A US6397484B1 US 6397484 B1 US6397484 B1 US 6397484B1 US 43617399 A US43617399 A US 43617399A US 6397484 B1 US6397484 B1 US 6397484B1 Authority US United States Prior art keywords laser plumb housing bob laser beam Prior art date Legal status (The legal status is an assumption and is not a legal conclusion. Google Patents US6397484B1 - Laser-emitting plumb-bob