FR413883A - Door knob acting as an electrical switch - Google Patents

Door knob acting as an electrical switch

Info

Publication number
FR413883A
FR413883A FR413883DA FR413883A FR 413883 A FR413883 A FR 413883A FR 413883D A FR413883D A FR 413883DA FR 413883 A FR413883 A FR 413883A
Authority
FR
France
Prior art keywords
electrical switch
door knob
knob acting
acting
door
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
Other languages
French (fr)
Inventor
Paul Hackenberger
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
PAUL HACKENBERGER
Original Assignee
PAUL HACKENBERGER
Priority date (The priority date is an assumption and is not a legal conclusion. 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 PAUL HACKENBERGER filed Critical PAUL HACKENBERGER
Application granted granted Critical
Publication of FR413883A publication Critical patent/FR413883A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B45/00—Alarm locks
    • E05B45/06—Electric alarm locks
FR413883D 1910-03-21 1910-03-21 Door knob acting as an electrical switch Expired FR413883A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR413883T 1910-03-21

Publications (1)

Publication Number Publication Date
FR413883A true FR413883A (en) 1910-08-20

Family

ID=1457634

Family Applications (1)

Application Number Title Priority Date Filing Date
FR413883D Expired FR413883A (en) 1910-03-21 1910-03-21 Door knob acting as an electrical switch

Country Status (1)

Country Link
FR (1) FR413883A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4457148A (en) * 1978-07-17 1984-07-03 Johansson Fritz H Electronic digital combination lock
US4770012A (en) * 1978-07-17 1988-09-13 Intelock Corporation Electronic digital combination lock

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4457148A (en) * 1978-07-17 1984-07-03 Johansson Fritz H Electronic digital combination lock
US4770012A (en) * 1978-07-17 1988-09-13 Intelock Corporation Electronic digital combination lock

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