Inventor · disambiguated record
John F. Ahlstrom
Also filed as: AHLSTROM JOHN F
5 granted patents·143 citations·filing 1992–2001
84Inventor score
Top patents by PatentIndex Score
5 records- 0179US6606260B2Switch mode power supply for a telephone entry system or the likeCHAMBERLAIN GROUP INC·Filed 2001·Granted Aug 12, 2003·30 cites·42 claims
- 0276US6748061B2Access control system having a programmable automatic notification featureCHAMBERLAIN GROUP INC·Filed 2001·Granted Jun 8, 2004·34 cites·23 claims
- 0375US6728351B2Access control system having tenant codes that may be selectively displayedCHAMBERLAIN GROUP INC·Filed 2001·Granted Apr 27, 2004·21 cites·22 claims
- 0463US5416495ALiquid-crystal display unit for electronic directorySENTEX SYSTEMS INC·Filed 1992·Granted May 16, 1995·25 cites·30 claims
- 0562US6218956B1Gate operator with remote diagnostic capabilityCHAMBERLAIN GROUP INC·Filed 1997·Granted Apr 17, 2001·33 cites·9 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →