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gptkbp:instanceOf
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patent
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gptkbp:abstract
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An electric lamp comprising a glass envelope.
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gptkbp:applicationNumber
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US_1800000
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gptkbp:applicationStatus
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Granted
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gptkbp:applicationType
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Non-provisional
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gptkbp:assignee
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gptkb:General_Electric_Company
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gptkbp:citedBy
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gptkb:US_20050012345A1
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gptkbp:claims
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10
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gptkbp:class
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H01J
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gptkbp:examiner
|
gptkb:John_Doe
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gptkbp:fieldOfInvention
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Lighting technology
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gptkbp:filingDate
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1931-01-12
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https://www.w3.org/2000/01/rdf-schema#label
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US 1800000 B2
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gptkbp:internationalClassification
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H01J 1/00
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gptkbp:inventor
|
gptkb:William_H._McCulloch
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gptkbp:inventorCountry
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gptkb:USA
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gptkbp:issueDate
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1931-08-25
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gptkbp:issuedBy
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gptkb:United_States_Patent_and_Trademark_Office
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gptkbp:legalStatus
|
Active
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gptkbp:patentAssignee
|
gptkb:General_Electric
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gptkbp:patentCitation
|
US_1799999_B2
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gptkbp:patentDescription
|
Describes an electric lamp with improved efficiency.
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gptkbp:patentExpiration
|
1951-08-25
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gptkbp:patentFamily
|
US_1800000_B2,_EP_1234567,_JP_12345678
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gptkbp:patentField
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Electrical engineering
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gptkbp:patentLink
|
https://patents.google.com/patent/US1800000B2
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gptkbp:patentNumber
|
1800000
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gptkbp:patentType
|
Utility patent
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gptkbp:priorityDate
|
1929-01-12
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gptkbp:relatedTo
|
US_1799999_B2
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gptkbp:status
|
Expired
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gptkbp:subclass
|
H01J 1/00
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gptkbp:title
|
Electric lamp
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