diff --git a/src/global_tables/objects.rs b/src/global_tables/objects.rs
index 99e475a..883f34d 100644
--- a/src/global_tables/objects.rs
+++ b/src/global_tables/objects.rs
@@ -56,6 +56,10 @@ where
     pub fn get_object(&self) -> &Option<Object> {
         &self.object
     }
+
+    pub fn serial_number(&self) -> u32 {
+        self.sn
+    }
 }
 
 #[repr(C)]
diff --git a/src/helper_types.rs b/src/helper_types.rs
index 93462dc..0f1f751 100644
--- a/src/helper_types.rs
+++ b/src/helper_types.rs
@@ -2,33 +2,6 @@ use std::marker::PhantomData;
 
 use crate::{fname::FName, tarray::FString};
 
-#[repr(C)]
-#[derive(Debug)]
-pub struct TWeakObjectPtr<T> {
-    object_index: u32,
-    serial_number: u32,
-    phantom: PhantomData<T>,
-}
-
-#[repr(C)]
-#[derive(Debug)]
-pub struct TPersistentObjectPtr<T, P> {
-    weak: TWeakObjectPtr<T>,
-    tag_at_last_test: u32,
-    object_id: P,
-}
-
-pub type TLazyObjectPtr<T> = TPersistentObjectPtr<T, [u8; 0x10]>;
-pub type TAssetPtr<T> = TPersistentObjectPtr<T, [u8; 0x10]>;
-pub type TSoftObjectPtr<T> = TPersistentObjectPtr<T, FSoftObjectPath>;
-
-#[repr(C)]
-#[derive(Debug)]
-pub struct FSoftObjectPath {
-    asset_path_name: FName,
-    sub_path_string: FString,
-}
-
 #[repr(C)]
 #[derive(Debug, Clone, Copy, PartialEq, Eq)]
 pub struct TEnumAsByte<T> {