I'm wondering how I can improve my `getPath` function (I found it on SO and adjusted it to my needs - biggest change was returning an array, used to be a string).   
It takes an object and a value as inputs and returns an array of object keys for the first matching value they find, otherwise `false`.

My focus isn't primarily the speed.  
Focus is: As short but at the same time as easy to understand as possible without having to write many comments. 

I'm using JS before ECMAScript 6 

<!-- begin snippet: js hide: false console: true babel: false -->

<!-- language: lang-js -->

    var nestedObj = {
      "rrr": {
        "ddd": {
          "aa    bbbb": {
            1: 30009463
          },
          "cc    dddd.": {
            1: 30010338
          },
          "e     fff": {
            1: 30007744
          },
          "d-Pool": {
            1: 30018363,
            2: 30017133,
            3: 30013107
          },
          "e   e g": {
            1: 30011707,
            2: 30017137
          },
          "f   f.-f. (f)": {
            1: 30012329
          },
          "g": {
            1: 30011894
          }
        }
      }
    };

    var result = getPath(nestedObj, 30017137);
    document.getElementById("result").innerHTML = result;

    function getPath(obj, value, path) {
      if (typeof obj !== 'object') {
        return false;
      }
      for (var key in obj) {
        if (obj.hasOwnProperty(key)) {
          var t = path;
          var v = obj[key];
          //SLICE is super important, otherwise newPath will reference path
          var newPath = path ? path.slice() : [];
          newPath.push(key);
          if (v === value) {
            return newPath;
          } else if (typeof v !== 'object') {
            newPath = t;
          }
          var res = getPath(v, value, newPath);
          if (res) {
            return res;
          }
        }
      }
      return false;
    }

<!-- language: lang-html -->

    <div id="result"></div>

<!-- end snippet -->

I wrote that one comment as a reminder to myself because I spent too much time wondering why the function didn't work before figuring this out. :D