{
    "title": "Frost Guard",
    "inventor_name": "John DeLAND",
    "publication_year": null,
    "device_name": "Frost Guard",
    "goal": null,
    "problem_addressed": null,
    "concept_summary": "The article references John DeLand's Frost Guard, a device mentioned in George Van Tassell's works on energy and free energy, but provides no technical description or experimental data.",
    "detailed_description": null,
    "category": "Overunity & Free Energy Claims",
    "principles": [],
    "scientific_domains": [],
    "mechanisms_of_action": [],
    "materials": [],
    "energy_sources": [],
    "inputs": [],
    "outputs": [],
    "claimed_performance": null,
    "experimental_evidence": null,
    "replication_status": null,
    "keywords": [
        "Frost Guard",
        "Free Energy",
        "Tesla"
    ],
    "related_technologies": [],
    "controversy_level": "medium",
    "confidence_score": 0.3,
    "practicability_score": 0.2,
    "fringe_score": 0.8,
    "evidence_strength": 0.1,
    "risk_score": 0.2,
    "trl_estimate": null,
    "source_urls": [
        "https://rexresearch.com/vantassel1.pdf",
        "https://rexresearch.com/vantassel2.pdf"
    ],
    "organizations": [],
    "applications": [],
    "limitations": [],
    "open_questions": [],
    "red_flags": [
        "Lack of technical details and supporting data"
    ],
    "evidence_quotes": []
}